Zoology Solved Mcqs 3gj3k

ZOOLOGY SOLVED MCQS 2001 PAPER - I

(1) Insects are characterized by: (a) 3 pairs of legs (b) Two pairs of antennae (c) Wings on body (d) Large sized eggs (e) None of these (2) Body is metamorically segmented in: (a) Porifera (b) Annelida (c) Coelentrata (d) None of these (3) Which of the following arthropod are totally aquatic? (a) Crustaceans (b) Insects (c) Milipedes (d) None of these (4) Dorsal tubular nerve cord is characteristic of: (a) Some chordates (b) Some non chordates (c) All non chordates (d) All chordates (e) None of these (5) Opposable thumbs are characteristic feature of: (a) Lagomorpha (b) Primates (c) Edentata (d) None of these (6) Differences in the scales of fishes and reptiles lies in their being: (a) Endodermal and dry (b) Epidermal and dry (c) Epidermal and wet (d) Endodermal and wet (e) None of these 1 www.css.theazkp.com www.facebook.com/thecsspoint

(7) Which of the following has oxygenated blood? (a) Renal veins (b) Pulmonary veins (c) Pulmonary artery (d) Hepatic portal veins (e) None of these (8) Scapula is the bone of: (a) Skull (b) Pelvic girdle (c) Pectoral girdle (d) Vertebral column (e) None of these (9) All the digestive are formed in vertebrates by: (a) Ectoderm only (b) Endoderm only (c) Mesoderm only (d) None of these (10) Ammonia is chief excretory product in (a) Reptiles (b) Turtles (c) Mammals (d) Fish (e) None of these (B) Check which of the following statements are true or false. On your answer sheets just write the question number and T or F. (11) Coelme is lined by ectodermal epithelium false (12) Non-chordates are dissected from dorsal side. true (13) All snakes are poisonous. false (14) Mouth in sharks is located on anterior side. true (15) Frogs have 3 cervical vertebrae. false (16) Contractile vacuole in protozoa is basically an excretory organ. tru (17) Nerve cord in chordates is Endodermal in origin. false (18) Whale is the largest mammals living in sea. true (19) Both male and female mosquitoes bite and carry parasites. false (20) The gammules are produced in coelenterates. false 2 www.css.theazkp.com www.facebook.com/thecsspoint

ZOOLOGY SOLVED MCQS 2001 PAPER - II

(1) Life originated during: (a) Pre-cambrian period (b) Mesozoic era (c) Coenozoic era. (d) Proterozoic era (e) None of these (2) Pancreas secrete: (a) Pepsin (b) Only hormones (c) Only enzymes (d) Both (a) and (b) (e) None of these (3) Louis Pasture is known for: (a) Germ theory of disease (b) Germ plasm theory (c) Mutation theory (d) Cell theory (e) None of these (4) Life originated: (a) In air (b) On land (c) In water (d) In all (a), (b) and (c) (e) None of these (5) Virus are: (a) Unicellular (b) Acellular (c) Multicellular (d) Free living (e) None of these 3 www.css.theazkp.com www.facebook.com/thecsspoint

(6) Wings of insects and bats are examples of: (a) Homologous organs (b) Analogous organs (c) Both (a) and (b) (d) Vestigial organs (e) None of these (7) Archeopteryx is a connecting link between: (a) Amphibians and reptiles (b) Reptiles and birds (c) Birds and mammals (d) Amphibians and birds (e) None of these (8) Lamarck‟s theory of Evolution is based upon: (a) Effect of environment (b) Use and disuse of body parts (c) Inheritance of Acquired characters (d) All of these (e) None of these (9) Absorption of digested food occurs mainly in: (a) Colon (b) Small intestine (c) Large intestine (d) Stomach (e) None of these (10) A renal portal system is found in: (a) Man (b) Horse (c) Rabbit (d) Frog (e) None of these (11) Tangoreceptors respond to: (a) Heat (b) Smell (c) Chemicals (d) Touch (e) None of these

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(12) Third ventricle is found in: (a) Brain of Rabbit (b) Heart of Rabbit (c) Kidney of Frog (d) Heart of Frog (e) None of these (13) Blood from glomerulus returns by: (a) Afferent renal arteriole (b) Efferent renal arteriole (c) Both of these (d) Renal vein (14) Vital morphological and Physiological units of Mammalian Kidney are: (a) Ureters (b) Seminiferous tubules (c) Uriniferous tubules (d) All of these (e) None of these (15) Which of the following secretes Oxytocin: (a) Adrenals (b) Pituitary (c) Thyroid (d) Ovaries (e) None of these (16) Longest cells in animals are: \ (a) Nerve cells (b) Egg cells (c) Kidney cells (d) Liver cells (e) None of these (17) Function of centromere is to: (a) Initiate cell division (b) Inhibit cell division (c) Provide site for cell division (d) Do all of these 5 www.css.theazkp.com www.facebook.com/thecsspoint

(18) Which of the following has extranuclear DNA: (a) Mitochondria (b) Lysosomes (c) Golgi complex (d) All of these (e) None of these (19) Who gave laws of segregation and Dominance? (a) Mendel (b) Morgan (c) Darwin (d) Muller (e) None of these (20) Adrenal glands are found in close association with: (a) Testes (b) Spleen (c) Liver (d) Ovaries (e) None of these

ZOOLOGY SOLVED MCQS 2002 PAPER – I (1) The mode of nutrition in AMOEBA is: (a) Holozoic (b) Saprozoic (c) Saprophytic (d) None of these (2) The coelom in PLATYHELMINTHYES is: (a) Pseudocoele (b) Haemocoele (c) Metacoele (d) None of these (3) EXCRETORY organs in earthworms are: (a) Nephron (b) Flame cells (c) Malpighian Tubules (d) Nephridia 6 www.css.theazkp.com www.facebook.com/thecsspoint

(4) Foot is used as an organ of locomotion in which of the following animals? (a) Freshwater mussel (b) Octupus (c) Sepia (d) None of these (5) Which group of animals out of the following is DIPLOBLASTIC? (a) Platyhelminthes (b) Echinodermata (c) Coelenterata (d) None of these (6) Which of the following has the maximum of oxygenated and de-oxygenated blood in the ventricle of its heart? (a) Fish (b) Frog (c) Crocodile (d) None of these (7) Reptiles are: (a) Oviparous (b) Viviparous (c) Ovo-viviparous (d) None of these (8) The urea formation in mammals takes place in: (a) Kidneys (b) Spleen (c) Liver (d) None of these (9) Vertebrates in which placenta is formed during the development of fetus are: (a) Reptiles (b) Aves (c) Mammals (d) None of these


(10) Lymph most closely resembles with: (a) Plasma (b) Interstitial fluid (c) Blood (d) None of these (B) Check which of the following statements are true or false. On your answer sheets just write the question number and T or F. (10) (11) Archaeopleryx is a missing link between birds and reptiles. T (12) Skin of frog has well-developed sweat glands. F (13) True Coelom develops from endoderm. F (14) Archenteron develops during blastula stage. F (15) The Trypanosoma causes the disease called “sleeping sickness”. T (16) Snakes can listen and enjoy music. F (17) Echidna is an egg-laying mammal. T (18) Herbivores have more pointed teeth than carnivores. F (19) Reptiles are warm blooded animals. F (20) The body cavity in arthropods is a haemocoel. T

ZOOLOGY SOLVED MCQS 2002 PAPER – II

(1) Many humans become ill by consuming milk products because they lack: (a) Bacteria in their intestines (b) Rennin (c) Hydrochloric acid (d) Lactase (e) None of these (2) Which of the following process cause substance to move across membranes without the expenditure of cellular energy? (a) Endocytosis (b) Active transport (c) Diffusion (d) None of these


(3) Respiratory pigment present in muscles is called: (a) Haemoglobin (b) Myoglobin (c) Haemocyanins (d) Globin (e) None of these (4) Which one of the following is not a viral disease? (a) Mumps (b) Small-pox (c) Cow-pox (d) Tetanus (e) None of these (5) Animals obtain Carbohydrates mainly from: (a) Sucrose (b) Glycogen (c) Starch (d) Glucose (e) None of these (6) Mesosomes are internal extensions of: (a) Cell Wall (b) Cell Membrane (c) Chromatin body (d) None of these (7) Sugar in each nucleotide of DNA is: (a) Deoxyglucose (b) Ribose (c) Glucose (d) Deoxyribose (e) None of these (8) Species is the basic unit of: (a) Genetics (b) Zoology (c) Ecology (d) Universe (e) None of these


(9) Which one of the following is false about AIDS: (a) HIV (b) HAV (c) T-lymphocytes (d) Host specific (e) None of these (10) Which statement about plastids is true? (a) They are power house of cell (b) They contain DNA and ribosomes (c) They are found in all organisms (d) They are surrounded by a single membrane (e) None of these (11) Which of the following is not found in all bacterial cells? (a) A nucleoid (b) Capsule (c) Cell membrane (d) Ribosomes (e) None of these (12) A virion is a: (a) Viral protein (b) Viral gene (c) Virus (d) Viral lysozyme (e) None of these (13) The study of fossils and their relationship to the evolution of life on earth is called: (a) Fossilization (b) Palaeontology (c) Palaeozoology (d) None of these


(14) A connecting and ing tissue in animal is: (a) Muscle (b) Bone (c) Nerve (d) Connective (e) None of these (15) Interstitial fluid closely resembles to: (a) Rain water (b) Sea water (c) Lake water (d) Pond water (e) None of these (16) The amount of lactic acid in muscles increases when they are lacking in: (a) CO2 (b) C6H12O6 (c) Energy (d) Oxygen (e) None of these (17) If a person eats more protein than are needed, this causes increased production of: (a) Hormones (b) Urea (c) Lactic acid (d) CO2 (e) None of these (18) The growth of human population is most rapid in: (a) Asia (b) Europe (c) North America (d) None of these (19) Which type of tissue forms glands? (a) Connective (b) Nervous (c) Muscle (d) Epithelial (e) None of these 11 www.css.theazkp.com www.facebook.com/thecsspoint

(20) Carbon combines with nitrogen in amino acid linkages to form: (a) Ester bonds (b) Peptide bonds (c) Ionic bonds (d) None of these ZOOLOGY SOLVED MCQS 2003 PAPER – I (1) Contractile vacuole in Protozoa is basically concerned with: (a) Excretion (b) Osmoregulation (c) Respiration (d) None of these (2) Gammules are produced in: (a) Annelida (b) Arthropoda (c) Porifera (d) None of these (3) Scales in Reptiles originate from: (a) Ectoderm (b) Mesoderm (c) Endoderm (d) None of these (4) The Chordates are dissected from: (a) Dorsal side (b) Ventral side (c) Lateral side (d) Both (a) and (b) (e) None of these (5) Open type of blood vascular system is present in: (a) Echinoderms (b) Chordates (c) Molluses (d) None of these 12 www.css.theazkp.com www.facebook.com/thecsspoint

(6) Frog has the following number of Neck Vertebrae: (a) Seven (b) Nine (c) Four (d) Zero (e) None of these (7) Insects have not adapted to the environment: (a) Aquatic (b) Fresh water (c) Marine (d) None of these

(8) The true jaw is not present in: (a) Elasmobranchs (b) Boney Fish (c) Agnatha (d) None of these (9) Sea Horse is included in: (a) Pisces (b) Mammals (c) Insects (d) Mollusca (e) None of these (10) A house fly has the following number of legs: (a) Four (b) Eight (c) Six (d) None of these


(B) Check which of the following statements are true or false. On your answer sheets just write the question number and T or F. (11) Some sponges are found in freshwater also. T (12) Choanocysts are found in Coelentrates. F (13) Coral reefs are present in the sandy coasts of Karachi. T (14) All the internal body cavities are not Coelome. T (15) Mouth parts in Arthropodes are modified appendages. T (16) The appearances of different stages in the embryonic development of a mammal is called as Metamorphosis. T (17) The major part of the Chordate body is Mesodermal in origin. T (18) The Echinoderms and Chordates are Enterocoelic. T (19) Girraffe and goat are similar in having seven neck vertebrae. T (20) The mammals are characterized by having Mammary glands. T


(1) The main division of the chromosomes occurs in: (a) Prophase (b) Metaphase (c) Anaphase (d) Jelophase (e) None of these (2) The protein synthesis occurs in: (a) Mitochondria (b) Endoplasmic reticulum (c) Ribosomes (d) Acrosome (e) None of these (3) Blood antigens are present in: (a) Blood serum (b) RBC’s (c) WBC‟s (d) Platelets (e) None of these 14 www.css.theazkp.com www.facebook.com/thecsspoint

(4) Sex linked genes are the genes located on: (a) X-chromosome only (b) Y-chromosome only (c) Both X and Y-chromosomes (d) X or Y-chromosomes (e) None of these (5) Transcription is the phenomenon associated with: (a) Synthesis of new DNA (b) Formation of mRNA and DNA (c) Formation of tRNA (d) None of these (6) Segregation of alleles of a gene occurs in: (a) Diploid individual (b) Homozygous individual (c) Heterozygous individual (d) All of the above (e) None of these (7) Sodium-Potassium pump is located in: (a) Liver (b) Heart Cell (c) Nerve cell (d) All of the above (e) None of these (8) Pepsin is an enzyme responsible for breaking: (a) Proteins (b) Lipids (c) Fats (d) None of these (9) Pace maker is located in: (a) Liver (b) Brain (c) Heart (d) Muscle 15 www.css.theazkp.com www.facebook.com/thecsspoint

(10) Follicle stimulating hormones are produced in: (a) Pituitary (b) Ovaries (c) Thyroid (d) Kidney (e) None of these (11) Genetic dominance is strongly associated with: (a) Personality dominance (b) Adaptive value (c) Population distribution (d) None of these (12) Crossing over is the physical exchange between chromosomes. (a) Homologous (b) Non-Homologous (c) Both (a) and (b) (d) None of these (13) XXY individual in man is phenotypically a: (a) Male (b) Female (c) Inter sex (d) None of these (14) Amino acids are the organic compound behaving like: (a) Acid (b) Base (c) Both (a) and (b) (d) None of these (15) Which of these can be the first living organism on the earth: (a) Protozoan (b) Algae (c) Virus (d) None of these


(16) Ontogeny represents the history of an organism. (a) Revolutionary (b) Embryonic (c) Both (a) and (b) (d) None of these (17) Nuclear membrane has a structure similar to: (a) Cell membrane (b) Mitochondrion (c) Endoplasmic reticulum (d) All of these (18) Osmosis is the movement of solutes through a membrane. (a) Permeable (b) Semi-permeable (c) Both (a) and (b) (d) None of these (19) Sickle Cell Anemia is the condition where the RBC‟s deflate. (a) Under Oxygen (b) Absence of Oxygen (c) Both (a) and (b) (d) None of these (20) Pond is an example of ecosystem: (a) Complete (b) Incomplete (c) Almost complete (d) None of these


ZOOLOGY SOLVED MCQS 2004 PAPER – I (1) Despite the structural diversities they are characterized by having soft body protected by calcareous shell developing from the mantle layer. (a) Corals (b) Foraminiferous (c) Molluses (d) None of these (2) The of the phylum are exclusively Marine. (a) Porifera (b) Coelenterata (c) Echino-dermata (d) None of these (3) How many paired legs are present in Arachnids? (a) 2 pairs (b) 3 pairs (c) 4 pairs (d) None of these (4) A true Coelom is absent in: (a) Platyhelminthes (b) Mollusca (c) Insects (d) None of these (5) A single aperture is present in (a) Nematoda (b) Cridaria (c) Annelida (d) None of these (6) The following represents Enterocoelous phylum. (a) Annelida (b) Mollusca (c) Echinodermata (d) None of these


(7) It is exclusively a Parasitic group. (a) Ciliata (b) Mestigophora (c) Rhizopoda (d) Sporozoa (e) None of these (8) Most species of Animal Kingdom belong to this Class: (a) Acazina (b) Hexapoda (c) Crustacea (d) None of these (9) Insect mouth parts are serially homologous. (a) Claspers (b) Sting apparatus (c) Cerci (d) Legs (e) None of these (10) The only groups of animals which are diploblastic in nature: (a) Platy helminthes (b) Coelentrata (c) Porifera (d) None of these (11) The phenomenon in which larva becomes sexually mature. (a) Retrogressive Metamorphosis (b) Neoteny (c) Both „a‟ and „b‟ (d) None of these (12) Amphibians have the following number of chambers in their heart. (a) 2 (b) 3 (c) 4 (d) 5 (e) None of these


(13) The young are born in less developed condition. (a) Monotremes (b) Marsupials (c) Placentals (d) None of these (14) Limbs of Sea Cows and Sea Lions are the product of: (a) Convergent Evolution (b) Divergent Evolution (c) Parallel Evolution (d) None of these (15) In these animals the teeth are reduced to molars without enamel or no teeth are present. (a) Moles (b) Bats (c) Sloths (d) None of these (16) Only hind limbs are lost in: (a) Snakes (b) Whales (c) Bats (d) None of these (17) Among the following which snake is non-poisonous? (a) Krait (b) Python (c) Viper (d) None of these (18) Which one is excluded from the Phylum Chordata. (a) Urochordata (b) Hemichordata (c) Cephalochordata (d) None of these


(19) The earliest known species of birds is: (a) Archaeopteryx (b) Hesperornis (c) Ichthyornis (d) None of these (20) A muscular diaphragm helps to move air into and out of the lungs in: (a) Amphibians (b) Reptilians (c) Avians (d) Mammalians (e) None of these

ZOOLOGY SOLVED MCQS 2004 PAPER – II (1) “Chiasma” formation could be seen first time in the following stage/sub stage of Meiosis: (a) Leptotene (b) Zygotene (c) Pachytene (d) Diplotene (e) None of these (2) In protein synthesis each triplet code binds itself with one: (a) Leptotene (b) Zygotene (c) Diplotene (d) None of these (3) For the rapid production of antibody in the precipitate test involving a rabbit one of the following animals could be used. (a) Frog (b) Lizard (c) Fowl (d) None of these


(4) In Drosophila very rarely father transmit his sex-linked trait to his normal son (in a cross of white eyed female with red eyed male): (a) In the case of primary non-disjunction (b) In the case of secondary non-disjunction (c) In the case of a normal cross (d) None of these (5) 13:3 Ration in “F2” is obtained in the case of: (a) Complementary genes for colours in corn (b) Coat colours in rodents (c) In epistatic genes (d) None of these (6) Crossing over rarely or never takes place in the male of: (a) Mice (b) Poultry (c) Man (d) Drosophila (e) None of these (7) XXY individual in Drosophila is phenotypically: (a) Male (b) Female (c) Inter sex (d) None of these (8) Fossils of which of these first living organisms were found? (a) Protozoan (b) Algea (c) Virus (d) None of these (9) Which of these are exclusively functional proteins? (a) Hormones (b) Enzyme (c) Plasma (d) None of these


(10) Phytogeny represents the history of an organism: (a) Evolutionary (b) Embryonic (c) Both „a‟ and „b‟ (d) None of these (11) Sickle Cell trait is found in: (a) Homozygous (b) Heterozygous (c) Both „a‟ and „b‟ (d) None of these (12) The first living and respiring organism on earth were: (a) Aerobes (b) Anaerobes (c) Both „a‟ and „b‟ (d) None of these (13) The major portion of digestion takes place in the: (a) Stomach (b) In the small intestine (c) In the large intestine (d) None of these (14) Practically all absorption of digested food occurs in: (a) Large intestine (b) Small intestine (c) Both „a‟ and „b‟ (d) None of these (15) Sibling species are produced as a result of: (a) Allopatric speciation (b) Sympatric speciation (c) Both „a‟ and „b‟ (d) None of these


(16) In the days just after its formation the earth had: (a) Reducing atmosphere (b) Oxidative atmosphere (c) Both „a‟ and „b‟ (d) None of these (17) Zygotes containing “XY” are females in: (a) Drosophila (b) In moths (c) In grasshoppers (d) None of these (18) The “Y” Chromosomes is sexually neutral in: (a) Man (b) In Drosophila (c) In moth (d) None of these (19) Marsupial are found in: (a) Only Australian region (b) In near arctic and Neotropical regions (c) Both „a‟ and „b‟ (d) None of these (20) In which stage of Meiosis Cento mere of each dyad divides? (a) Metaphase I (b) Metaphase II (c) Anaphase I (d) Anaphase II (e) None of these


ZOOLOGY SOLVED MCQS 2005 PAPER – I 1. Coelom is the body cavity originating from a) ectoderm b) mesoderm c) endoderm d) none of these 2. Cytopharynx is the structure present in a) Amoeba b) paramecium c) Euglena d)foraminifers e) none of these 3. Gemmules are the reproductive structures produced in a) sponges b) Annelids c) Arthropods d) coelentrates 4. Comb plates are very specific structures of a) coelenterates b) Arthropoda c) ctenophora d) none of these 5. Nerve net is present in coelenterates at a) in endodermis b) below upper epidermis c) in mesoglea d) not present in coelentrates 6. Circulatory system in insects is a) Closed type b) open type c) lymphic type d) All of these


7. Silk is produced by silkworm a) larva b) adult c) pupa d) All of these 8. The basic function of a flame cell is a) excretion b) osmoregulation c) digestion d) none of these 9. The scale in fishes are a) ectodermal b) endodermal c) mesodermal d) different in different fishes 10. The neck of a camel has vertebras: a) 14 b) 9 c) 7 d) 20 e) none of these 11. Spiders are Arachnids and they have legs a) 6 b) 8 c) 9 d) none of these 12. Gill slits in chordates are present in a) mouth b) pharynx c) oesophagus d) All of these


13. Birds are flying and have ovaries a) one on right side b) both on right and left side c) one on any side d) one on left side 14. Adult echinoderm has symmetry a) Bilateral b) radial c) both a and b d) none of these 15. The typical characters of all mammals is a) mammary glands b) brain c) hair d) All of these 16. Mouth in shark is located a) dorsal b) ventral c) anterior end d) none of these 17. The number of ribs in frog are a) 4 b) 6 c) 8 d) none of these 18. Earth worm are dissected from side a) Dorsal b) ventral c) both a and b d) lateral


19. Duck billed platypus is a a) Bird b) placental mammal c) monotreme d) Marsupial 20. Silver fish is a member of a) pisces b) insects c) echinodermata d) none of these


1. The chemical composition of a chromosome is : a) lipoprotein b) polysaccharide c) nucleoprotein d) None of these 2. Lysosomes are responsible for: a) Protein b) ATP formation c) intracellular breakdown d) None of these 3. Ribosomes are located on: a) cell membrane b) rough endoplasmic reticulum c) mitochondria d) nuclear membrane e) None of these


4. The metaphase chromosomes are thick because these a) multiply b) duplicate c) coiled coiling d) none of these 5. Glycolysis occur in a) cytoplasm b) mitochondria c) cell membrane d) all of these 6. Nerves convey the message in the form of a) physical impulse b) chemical impulse c) electrical impulse d) none of these 7. Follicle stimulating hormone is produced in: a) ovary b) pituitary c) hypothalamus d) all of these 8. The primary excretory product is a) Ammonia b) Carbon dioxide c) feaces d) none of these 9. Pepsin is responsible for digestion of: a) carbohydrate b) lipid c) protein d) all of these


10. XXY individual in men is phenotypically a) male b) female c) intersex d) none of these 11. Sex linked genes are located on : a) only on X chromosome b) only on Y chromosome c) sex chromosome d) All of these 12. Mendelian segregation is applicable to : a) gametogenesis b) meiosis c) spore formation d) none of these 13. the number of the alleles of a gene in a diploid individual is: a) any number b) one c) two d) three 14. The gene mapping is measured in: a) Millimeters b) microns c) Angstrom d) centimorgans 15. Genetic dominance concerns with the phenotypic expression in: a) heterozygous b) homozygous c) both a and b d) none of these 16. The first living organism was a) Algal cell b) virus c) bacteria d) none of these 30 www.css.theazkp.com www.facebook.com/thecsspoint

17. Enzymes are chemically a) carbohydrates b) lipids c) lipoproteins d) proteins 18. Theory of natural selection was initially proposed by: a) Darwin b) Wallace c) both Darwin and Wallace d) Eyll 19. Second law of thermodynamics demand a) energy stability b) energy loss during transfer of energy c) Energy flow from one form to Another d) none of these 20. The basic purpose of ecosystem is a) maintenance of organisms b) energy flow c) chemical movements d) none of these


ZOOLOGY SOLVED MCQS 2006 PAPER – I (1) Contractile vacoule in protozoa is basically responsible for (a) Excretion (b) osmoregultion (c) Feeding (d) All of these. (2) Pneumatocysts are typically present in (a) Porifera (b) Annelida (c) Coelentrata (d) Protozoa (3) Pinococysts are present in (a) Echinodermata (b) Arthropoda (c) Porifera (d) None of these. (4) Nerve cord is dorsally located in (a) Annelids (b) Mollusca (c) Arthropodes (d) None of these (5) Open circulatory system is present in (a) Annelids (b) Insects (c) Reptiles (d) Mammals (6) Sponges are present in (a) Marine (b) Freshwater (c) Moist places (d) Both (a) and (b) 32 www.css.theazkp.com www.facebook.com/thecsspoint

(7) Telson is present in (a) Annelids (b) Arthropoda (c) Molluse (d) Chordates (8) Entamoeba histolytica is a member of class (a) Scyphozoa (b) Polycheata (c) Mastigophora (d) None of these (9) A house fly has legs (a) 8 (b) 10 (c) 6 (d) 4 (10) Wasps bite using (a) Mouth (b) Proboscis (c) Genital claspers (d) None of these (11) Number of cranial nerves in fish (a) 10 (b) 12 (c) 8 (d) None of these (12) Frog has ribes (a) 6 (b) 12 (c) 4 (d) None of these


(13) Scales in reptiles are (a) Ectodermal (b) mesodermal (c) Both a & b (d) Endodermal (14) Gill slits in Amphioxus are present (a) Mouth (b) Neck (c) Pharynx (d) Head (15) Giraffe has neck vertbrea (a) 15 (b) 10 (c) 7 (d) None of these (16) Duck billed platypus has on its body (a) Feathers (b) Hairs (c) Scales (d) None of these (17) Pulmonary vein in mammals carries blood (a) Deoxygenated (b) oxygenated (c) Both a&b (d) None of these (18) RBCs in amphibians are (a) Nucleated (b) Without nucleus (c) Both a&b (d) None of these (19) Python kills its prey by (a) poison biting (b) Constriction (c) Both a&b (d) None of these 34 www.css.theazkp.com www.facebook.com/thecsspoint

(20)The location of mouth is ventral in (a) Bony fish (b) permyzaon (c) Shark (d) None of these


1) Cell membrane is chemically a. nucleoprotein b. lipoprotein c. lipid d. protein 2). ATP is produced in a. golgi complex b. lysosome c. mitochondria d. none of these 3).Transcription is the phenomenon involved with a. mRNA formation b. binding of aminoacid c. DNA replication d. all of these 4) Glycolsis accurs in a. endoplasmic recticulum b. cytoplasm c. mitichondria d. golgi bodies


5) Centromere in a chromosome is heterochromatic as it a. do not divide b. helps chromosomal attachment with the spindle c. do not go a regular change in the cell cycle d. all of these together 6) Neurotransmitter are involved in a. nerve transmission b. synoptic transmission c. chemical transmission d. b & c e. a & c 7) Pepsin is the chemical involved in a. Protein breakdown b. carbohydrates breakdown c. protein synthesis d. lipid breakdown 8) Food is assimilated into the body from digestive tract in a. oesophagus b. stomach c. small intestine d. rectum 9) Excretory product is produced through the breakdown of a. protein b. carbohydrates c. lipid d. all of these 10) Basic process of respiration occurs in a. lungs b. mitochondria c. blood circulation d. none of these


11) Genetic dominance involves a. personality dominance b. better adaptive value c. a wider population distribution d. all a,b & c e. none of the above 12) Principle of segregation is applicable to a. Hetrozygous individual only b. homozygous indvidual only c. Diploid individual d. none of these 13) XXY individual in man is phenotypically a a. Female b. male c. super female d. super male 14) sex linkage concerns with the gene a. Responsible for the development of sex b. Associate with some sex c. Located on X chromosome only d. located on sex chromosome 15) Cistron is the smallest part of the chromosome working as a. Mutational unit b. functional unit c. Recombinational unit d. None of these 16) First living organism on this planet was a. an algal cell b. a virus c. a protozoa d. none of these


17) Darwin's theory of natural selection believe in selection of a. the fittest b. fitters c. better adapted individual d. All of these 18) The raw material for evolution comes from a. Mutation b. Chromosomal aberration c. Recombination d. All of these 19) A group develops to adapt a number of diverse niches.The phenomena is called as a. Convergent evolution b. Divergent c. Punctuated evolution d. none of these 20) Linnaeus was the father of classification and was a. Not believer of evolution b. strong believer of evolution c. believer of limited evolution d. Believer of natural selection


ZOOLOGY SOLVED MCQS 2007 PAPER – I (1) The autonomic nervous system comprises of: (a) Sympathetic nervous system (b) Para-sympathetic nervous system (c) Both (a) and (b) (d) None of these (2) In Turtles, the dorsal plate is known as: (a) carapace (b) Plastron (c) scutes (d) None of these (3) The odd-toed ungulates are termed as: (a) Perissodactyls (b) Artiodactyls (c) Paradactyls (d) All of these (4) The functional kidney of adult fishes is: (a) Pronephros (b) Mesonephros (c) Metanephros (d) None of these (5) The telencephalon & diencephalons are part of: (a) Mid-brain (b) Hind brain (c) Fore brain (d) All of these (6) The sense organs of taste in tongue are known as: (a) Olfactoreceptors (b) Gustatoreceptors (c) cutaneous receptors 39 www.css.theazkp.com www.facebook.com/thecsspoint

(7) The process of cartilage formation is known as: (a) chondrioblasts (b) Chondriocytosis (c) chondriogenesis (d) None of these (8) Significant flight muscles in birds is: (a) Pectoral (b) Appendicular (c) Tensor (d) All of these (9) Typical character of a mammal is: (a) Hairs (b) Mammary glands (c) Only (a) (d) Both (a) and (b) (10) Body wall of obelia is: (a) Monoblastic (b) Diploblastic (c) Triploblastic (d) None of these (11) The arrangement of the organs of an animal in a series of similar units along the longitudinal axis of the body is called: (a) Pseudometamerism (b) Parametamerism (c) Metamerism (d) Prometamerism (12) The white blood corpuscles of the cockroach are called as: (a) Haematocyte (b) Haematoclast (c) Haemoblast (d) Leucocyte


(13) Hormone which control molting in insects is: (a) cardisone (b) ecdysone (c) ecdycortisone (d) None of these (14) In Sycon water leave the sponge through: (a) ostia (b) osculum (c) Madriporite (d) All of these (15) Flame cells are commonly found in: (a) Platyhelminthes (b) Annelida (c) Coelenterata (d) All of these (16) The number of vertebrae in horse neck are: (a) 5 (b) 6 (c) 7 (d) 10 (17) The group in which RBC‟s are mostly non-nucleated: (a) Amphibians (b) Birds (c) Mammals (d) All of these (18) Cockroach is dissected from side: (a) dorsal (b) ventral (c) Lateral (d) Both (a) and (b) (19) Heart of fish is: (a) Open (b) Single circuit (c) Double circuit (d) Both (b) and (c) 41 www.css.theazkp.com www.facebook.com/thecsspoint

(20) Round worms belong to: (a) Platyhelminthes (b) Annelida (c) Centipedesa (d) None of these


(1) Chemical composition of Ribosomes is: (a) DNA (b) RNA (c) DNA & Protein (d) RNA & Protein (2) Electron Transport chain is located in: (a) cytoplasm (b) mitochondria (c) lysosmes (d) Nucleus (3) Transcription involve the synthesis of: (a) Mrna (b) rRNA (c) tRNA (d) All of these (4) XXY individual in Drosophila (Fruit fly) is: (a) male (b) female (c) sterile (d) All of these


(5) Ecological niche is of an individual: (a) address (b) profession (c) Both (a) and (b) (d) None of these (6) Crossing over involve the formation of: (a) desmonstomata (b) chromonemata (c) chiasmata (d) All of these (7) Attachment of O2 with hemoglobin to form oxyhemoglobin is a change: (a) Physical (b) Chemical (c) Both (a) and (b) (d) None of these (8) Acetylcholine is a: (a) chemical transmitter (b) electrical transmitter (c) physical transmitter (d) None of these (9) In Blood groups gene IA and IB are: (a) Co-dominant (b) Co-recessive (c) Dominant recessive (d) Incomplete Dominant (10) The idea of Lamarack on evolution is based upon: (a) Use & Disuse of organs (b) Acquired character (c) Both (a) and (b) (d) None of these (11) Ammonia is the excretory nitrogenous waste: (a) Primary (b) Secondary (c) Tertiary (d) None of these 43 www.css.theazkp.com www.facebook.com/thecsspoint

(12) Special functions of smooth Endoplasmic reticulum is: (a) Lipid synthesis (b) Glycogenolysis (c) Detoxification (d) All of these (13) In birds sex is determined by the type of: (a) Sperms (b) Eggs (c) Both (a) and (b) (d) None of these (14) The Pre-Historic atmosphere of earth had: (a) methane (b) ammonia (c) hydrogen sulphide (d) All of these (15) C. Linneous proposed the method of naming organisms: (a) uninominal (b) binomial (c) trinomial (d) None of these (16) Trypsin is protease secreted in: (a) Bile (b) Saliva (c) Gastric juice (d) Pancreatic juice (17) Cerebellum is the part of brain: (a) Forebrain (b) Mid-brain (c) Hind-brain (d) Spinal cord


(18) The constriction of centromere is called as: (a) Primary (b) Secondary (c) Tertiary (d) All of these (19) Gene for Haemophilia in man is located on: (a) autosome (b) X-chromosome (c) Y-chromosome (d) All of these (20) DNA duplicate during: (a) Prophase (b) Metaphase (c) Telophase (d) Interphase

ZOOLOGY SOLVED MCQS 2009 PAPER – I i) What is the function of contractile vacuole? a) Respiration b) reproduction c) Osmoregulation d) digestion e) None of these ii) Specules are secreted by special mesenchymal amoebocytes called a) scleroblasts b) microscleres c) myocytes d) collencytes e) None of these


iii) true nerve cells or ganglion cells occur for the first time in a) protozoa b) porifera c) coelentrata d) annelida e) None of these iv) The process by which an organism can replace its lost or damaged body parts is called a) reformation b) regeneration c) reclamation d) reconstruction e) None of these v) nematocysts are found in a) protozoa b) porifera c) annelida d) mollusca e) None of these vi) in polychaetes the locomotory organ is a)pseudopodium b) neuropodium c) notopodium d) parapodium e) None of these vii) worms belonging to phylum platyhelminthes are commonly known as a)round worms b) ring worms c) segmented worms d) earth worms e) None of these viii) bipinnaria is the larval form of a) coelentrata b) polychaeta c) echinodermata d) cestoda 46 www.css.theazkp.com www.facebook.com/thecsspoint

ix) closed type of circulatory system is found in a) platyhelminthes b) annelida c) porifera d) arthropoda e) None of these x) the two common mosquito genera ,anopheles and culex, can be easily identified by a) color b) flying speed c) size d) sitting posture e) None of these xi) sweat glands are epidermal glands found in a) all birds b) reptiles and mammals c) mammals only d) birds and reptiles e) None of these xii) sternum is absent in a) mammals b) birds c) amphibians d) fishes e) None of these xiii) amphioxus belongs to a) cephalochordata b) hemichordata c) urochordata d) cyclostoma e) None of these xiv) the urochordates or tunicates are marine animals commonly known as a) sea cucumber b) sea squirts c) sea urchin 47 www.css.theazkp.com www.facebook.com/thecsspoint

xv) optic lobes are found in a) fore brain b) mid brain c) hind brain d) medulla e) None of these xvi) the number of cervical vertebrae in most mammals is a) 2 b) 4 c) 9 d) 11 e) None of these xvii) lymph hearts are absent in a) fishes b) amphibians c) reptiles d) mammals e) none of these xviii) the lymph capillaries coming from intestinal villi are called a) veins b) lymph nodes c) lacteals d) lymph ducts e) None of these xix) how many caudal vertebrae are found in man? a) 1-2 b) 3-4 c) 5-6 d) 7-8 e) None of these xx) the inner membrane of the two foetal membranes in reptiles, birds and mammals is called a) chorion b) amnion c) peritoneum d) pericardium 48 www.css.theazkp.com www.facebook.com/thecsspoint

ZOOLOGY SOLVED MCQS 2009 PAPER – II i) Which part of the brain detects the temperature changes in the blood? a) cerebellum b) cerebral hemisphere c) hypothalamus d) medulla e) None of these ii) From which of the following is urea formed? a) Fat b) glycerol c) proteins d) starch e) None of these iii) Where are hormones destroyed? a) adrenal gland b) kidney c) liver d) pancreas e) None of these iv) During the beating of the heart, in which region will the highest pressure develop? a) left atrium b) left ventricle c) pulmonary artery d) right ventricle e) None of these v) which molecules are are produced by the digestion of starch and proteins? a) glycerol and amino acids b) glycerol and fatty acids c) sugar and amino acids d) sugar and fatty acids e) None of these 49 www.css.theazkp.com www.facebook.com/thecsspoint

vi) which type of the cell stimulates the release of adrenaline? a) white blood cell b) muscle cell c) pancreatic cell d) red blood cells e) None of these vii)which secretion, released into the ailementary canal, contains no enzyme, but speeds up fat digestion? a) bile b) intestinal juice c) mucus d) pancreatic juice e) None of these viii)which of the following normally enters the blood as it es through the pancreas? a) amino acids b) glycogen c) insulin d) lipase e) None of these ix) which of the following is the example of discontinuous variation? a) blood group b) height c) intelligence d) weight e) None of these x) which of the following would be more prominent in a secretory cell than in the non secretory cell? a) golgi apparatus b) mitochondria c) ribosomes d) pinocytotic vesicles e) None of these


xi) which of the following is both found in DNA and mRNA? a) ribose b) thyamine c) sugar-phosphate chain d) double helix structure e) None of these xii) which is carried by the molecule of transfer RNA? a) an amino acid molecule b) enzymes for protein synthesis c) information from the DNA d) sequence of codons e) None of these xiii) The populations of all the species in a given habitat are referred to as a) biosphere d) community c) ecosphere d) ecosystem e) None of these xiv) which of the following is not recycled in ecosystem? a) carbon b) energy c) sulphur d) water e) None of these xv) in most ecosystems, the greatest amount of energy flows through the, a) secondary consumers b) herbivores c) carnivores d) decomposers e) None of these xvi) during which phase of meiosis are chiasmata formed? a) prophase I b) metaphase II c) metaphase I d) telophase II 51 www.css.theazkp.com www.facebook.com/thecsspoint

xvii) Who proposed the mutation theory of evolution? a) Lamarck b) Darwin c) De Vries d) Wallace e) None of these xviii) During which phase of meiosis do homologous chromosomes separate? a) prophase I b) prophase II c) anaphase I e) None of these xix) in a DNA molecule,the basis of Pyrimidine are a) thymine and cytosine b) cytosine and guanine c) adenine and thymine d) thymine and guanine e) None of these xx)Triassic and Jurassic periods are included in the a) palaeozoic era b) mesozoic era c) coenozoic era d) proterozoic era e) None of these


ZOOLOGY SOLVED MCQS 2010 PAPER – I

(i) Choanocytes are found in? (a) Coelentrate (b) Annelida (c) Porifera (d) Arthropoda (e) All of these (ii) House fly is a common insect having ______ legs. (a) 4 (b) 6 (c) 8 (d) None of these (iii) Silver fish is included in: (a) Pisces (b) Arthropoda (c) Annelida (d) None of these (iv) Number of vertebrae in neck of a giraffe are: (a) 10 (b) 5 (c) 7 (d) None of these (v) Flame cell is typical of: (a) Annelida (b) Chordata (c) Porifera (d) Platyhelminthes (e) None of these


(vi) Nervous system originates from: (a) Epidermis (b) Mesodermis (c) Endodermis (d) None of these (e) All of these (vii) Mammals are characterized by: (a) Mammary Glands (b) Hair (c) All of these (d) None of these (viii) Nucleus is not present in RBC of: (a) Fish (b) Snake (c) Bird (d) Mammal (e) None of these (ix) Scales in fish derive their origin from: (a) Epidermis (b) Mesodermis (c) Endodermis (d) None of these (x) Sound in insect is produced through: (a) Mouth (b) Tracheal movements (c) Wing beat (d) None of these (xi) Sole of foot in man has ______ location: (a) Dorsal (b) Ventral (c) lateral (d) None of these


(xii) Coelome in adult mammals is represented by: (a) Visceral cavity (b) Cavity in brain (c) Both of these (d) None of these (xiii) The Skeleton in insects is: (a) Exoskeleton (b) Endoskeleton (c) None of these (d) Both of these (xiv) Sea horse is included in: (a) Mammals (b) Fish (c) Reptiles (d) None of these (xv) Circulatory system is open type in: (a) Annelida (b) Insects (c) Mammals (d) None of these (xvi) The body cavity is regarded as pseudocoele in Nematodes because: (a) Has ectodermal origin (b) Not completely lined by Mesodermal epithelium (c) Has endodermal origin (d) None of these (e) All of these (xvii) True metameric segmentation is characteristic of: (a) Molluses (b) Annelida (c) Arthropoda (d) None of these


(xviii) Hollow dorsal nervous system is present in: (a) Amphiexus (b) Fish (c) Mammals (c) None of these (e) All of these (xix) Contractile vacuole in protozoa is mainly responsible for: (a) Excretion (b) Osmoregulation (c) respiration (d) None of these (xx) Scorpion is included in: (a) Insects (b) Arachnida (c) Echinodermata (d) None of these


(i) Cell membrane is formed of: (a) Carbohydrate (b) Lipid (c) Protein (d) Lipoprotein (e) None of these (ii) Electron transport chain reaction occur in: (a) Cell membrane (b) Cell wall (c) Endoplasm (d) Mitochondrion (e) None of these


(iii) Ribosomes in cell are responsible for: (a) Protein formation (b) Glycolysis (c) Lipid breakdown (d) All of these (e) None of these (iv) Golgi complex is responsible for: (a) Carbohydrate metabolism (b) Protein synthesis (c) Lipid synthesis (d) None of these (e) All of these (v) Basic excretory chemicals in all the cells is: (a) Urea (b) Uric acid (c) Ammonia (d) None of these (e) All of these (vi) Oxygen transport from lungs to tissue occurs through: (a) Difference in pressure (b) Solubility in plasma (c) Attachment with RBC surface (d) None of these (e) All of these (vii) FSH (Follicle Stimulating Hormone) is produced in: (a) Ovary (b) Hypothalamus (c) Pituatary (d) None of these (e) All of these (viii) Lipase is an enzyme responsible for: (a) Carbohydrate metabolism (b) Lipid breakdown (c) Protein breakdown (d) None of these 57 www.css.theazkp.com www.facebook.com/thecsspoint

(ix) Law of segregation is applicable to: (a) Homozygous individual (b) Heterozygous individual (c) Both Homozygous and heterozygous (d) None of these (x) Sex linked genes concern: (a) Sex characters (b) Somatic character (c) Mostly somatic character (d) None of these (xi) XXY individual in man is a phenotypic male, because: (a) Two X chromosomes are present (b) Y-chromosome is present (c) Both X and Y chromosomes are present (d) None of these (xii) Trisomic condition can be produced through: (a) Primary Non-disjunction (b) Secondary non-disjunction (c) Both a and b (d) None of these (xiii) First living organism on this planet was: (a) A protozoan (b) An algae (c) Bacteria (d) A virus (e) None of these (xiv) Theory of Natural Selection was proposed by: (a) Charles Darwin (b) A.R. Wallace (c) Both a and b (d) None of these


(xv) Lamarck‟s theory of inheritance of acquired characters says: (a) Environment forces a character (b) Environment selects a character (c) Environment has no effect (d) None of these (xvi) Orthoselection means: (a) Selection occurring at different times (b) Selection occurring at different rates (c) Selection occurring in one direction (d) None of these (e) All of these (xvii) Haeckle‟s biogenetic law says: (a) Ontogeny repeats phylogeny (b) Phylogeny repeats ontogeny (c) None of these (d) Both a and b together (xviii) Ecosystem is a system involving biotic and abiotic components which: (a) Interact (b) Interact for energy flow (c) No interaction (d) None of these (xix) Nitrogen biogeochemical cycle is regarded as gasous cycle because: (a) Nitrogen is a gas (b) Recycling is almost complete (c) Major part of cycle is in gasous state (d) None of these (xx) Raw material for evolution are variation, which are produced through: (a) Gene mutation (b) Chromosomal aberration (c) Both a and b (d) None of these


ZOOLOGY SOLVED MCQS 2011 PAPER – I

(i) The disease causing protozoan is: (a) Amoeba (b) Paramecium (c) Stentor (d) Trypanosoma (e) None of these (ii) Binucleate protozoan is: (a) Mastigo-amoeba (b) Toxoplasma (c) Didymium (d) Trichonympha (e) None of these (iii) Spicules in sponges are secreted by cells called: (a) Chromocytes (b) Thesocytes (c) Scleroblasts (d) Spongoblast (e) None of these (iv) Which one of the following coelenterate is also called Portuguese-man of war: (a) Hydra (b) Velella (c) Obelia (d) Physalia (e) None of these (v) Pseudocoelomate animals are: (a) Coelenterates (b) Nematodes (c) Annelids (d) Arthropods (e) None of these 60 www.css.theazkp.com www.facebook.com/thecsspoint

(vi) Earth worm belongs to: (a) Phylum platyhelminthes (b) Nematode (c) Mollusca (d) Arthropoda (e) None of these (vii) The number of arms in octopus is: (a) Four (b) Six (c) Eight (d) Ten (e) None of these (viii) The excretory organ of cockroach is: (a) Flame cell (b) Nephridia (c) Coxal gland (d) Green gland (e) None of these (ix) The compound eyes are present in: (a) Cuttle fish (b) Sea urchin (c) Sea mouse (d) Honey bee (e) None of these (x) Balanoglossus belongs to: (a) Hemichordata (b) Cephalochordata (c) Urochordata (d) Craniata (e) None of these


(xi) The extinct vertebrates are: (a) Elasmobranchi (b) Placodermi (c) Osteichthyes (d) All of these (e) None of these (xii) The type of scales found in shark is: (a) Placoid scale (b) Ganoid scale (c) Cosmoid scale (d) Cycloid scale (e) None of these (xiii) All of the following animals have three chamber heart except: (a) Uromastix (b) Snake (c) Wall lizard (d) Crocodile (e) None of these (xiv) An animal group having radially symmetrical adults but bilaterally larvae are: (a) Annelids (b) Echinoderm (c) Chordates (d) All of these (e) None of these (xv) Which one of the following is not an extra embryonic membranes? (a) Pleura (b) Amnion (c) Chorion (d) Allontoise (e) None of these (xvi) The egg laying mammals such as Duck billed platypus and spiny anteater are found in: (a) Asia (b) North America (c) South America (d) Australia 62 www.css.theazkp.com www.facebook.com/thecsspoint

(xvii) Renal portal system is absent in: (a) Mammals (b) Fish (c) Amphibian (d) Reptiles (e) None of these (xviii) Swim bladder is present in: (a) Amphibia (b) Giant turtle (c) Sea snake (d) All of these (e) None of these (xix) Diencephalons is a part of: (a) Circulatory system (b) Excretory system (c) Nervous system (d) Respiratory system (e) None of these (xx) Microlecithal egg is found in: (a) Reptiles (b) Birds (c) Amphibian (d) All of these (e) None of these

\ 63 www.css.theazkp.com www.facebook.com/thecsspoint


(i) Which one of the enzyme is present in saliva: (a) Ptyalin (b) Pepsin (c) Enterokinase (d) Lipase (e) None of these (ii) Which one of the following act as Secondary Messenger after hormonal action on target cells: (a) ATP (b) CTP (c) CAMP (d) ADP (e) None of these (iii) Besides nucleus of cell, which organelles also contain DNA? (a) Golgibodies (b) Lysosome (c) Mitochondria (d) Cell Membrane (e) None of these (iv) Lysosome in a cell is responsible for: (a) Autolysis (b) Autophagy (c) Intracellular digestion (d) All of these (e) None of these (v) ABO blood system in human is example of: (a) Epistasis (b) Linkage (c) Polygenic inheritance (d) Multiple allele (e) None of these 64 www.css.theazkp.com www.facebook.com/thecsspoint

(vi) Who describe sex linkage in Drosophilla: (a) Sutton (b) Garth Nicolson (c) Jhonathan Singer (d) Robertson (e) None of these (vii) The number of cranial nerves in man is: (a) 8 (b) 10 (c) 12 (d) 14 (e) None of these (viii) Wings of Birds and fly are example of: (a) Homologus organ (b) Analogus organ (c) Vestigeal organ (d) All of these (e) None of these (ix) The main chemical composition of ribosomes is: (a) RNA + Protein (b) DNA + Protein (c) Protein + Carbohydrate (d) Protein + Lipids (e) None of these (x) The hormone cortisol is secreted by: (a) Pituitary gland (b) Ovary (c) Pancreas (d) Adrenal gland (e) None of these


(xi) In pond ecosystem the primary consumer are: (a) Zooplankton (b) Insect larvae (c) Fish (d) All of these (e) None of these (xii) The xx, xo sex determination mechanism is present in: (a) Man (b) Grasshopper (c) Birds (d) All of these (e) None of these (xiii) The DNA replication is: (a) Conservative (b) Semi conservative (c) Dispersive (d) Equatorial (e) None of these (xiv) Which one of the following genetic disorder is dominant in man: (a) Colour blindness (b) Haemophilia (c) Tay-Sachs (d) All of these (e) None of these (xv) The abiotic factor that bring sudden changes in ecosystem is: (a) Light (b) Soil (c) In organic nutrients (d) Fire (e) None of these


(xvi) In human, blood clotting is due to the presence of protein called: (a) Albumin (b) Globulin (c) Haemoglobin (d) Actin (e) None of these (xvii) Male sex hormones are collectively known as: (a) Estrogen (b) Androgen (c) Cortisone (d) Somatotrophic (e) None of these (xviii) Which one of the following is not a Membrane bound cell organelle: (a) Mitochondria (b) Endoplasmic Reticulum (c) Ribosome (d) Chloroplast (e) None of these (xix) The enzyme pepsin is present in: (a) Pancreatic Juice (b) Bile (c) Saliva (d) Gastric Juice (e) None of these (xx) The change in species composition of a community over a long period of time is called: (a) Food chain (b) Food web (c) Ecological succession (d) Niche (e) None of these


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