Second Periodical Test In Science 6 691u12

Choose and shade the letter of the correct answer in your answer sheet. 1. All organisms need several resources (such as food, water, protection ) to live. Which of the following best explains the relationship between organisms and the areas in which they live? a. different kinds of organisms or plants need the same food and resources. b. different kinds of plants living in the same area need different food and resources. c. plants have specific features/structures that allow them to use the various resources where they live. d. animals change their features so they can use the various resources where they live. 2. Which organism in the food chain is a producer?

grass—grasshopper—fish—hawk a. fish

b. grass

c. hawk

For item 3, study the diagram below. Sun plants

d. grasshopper mosquito larvae

turtles

dragonfly larvae

fish

beetles

Pelicans 3. If all of the fish are removed from this food web, which animal populations will most likely decrease first? a. turtles b. pelicans c. mosquito larvae d. dragonfly larvae For item 4, refer to the chart listing the observations about the feeding interrelationships among the following organisms: RICE, GRASSHOPPER, FROG, HAWK, SNAKE Rice is eaten by grasshoppers. Grasshoppers are eaten by frogs, snakes, and hawk. Frogs are eaten by snakes. Snakes are eaten by hawks. 4. Which diagram represents these feeding relationships ? a.

RICE

GRASSHOPPERS

HAWKS

SNAKES

b.

HAWKS

FROGS

FROGS

SNAKES

GRASSHOPPERS RICE

c. .

HAWKS GRASSHOPPERS

HAWKS SNAKES

d. RICE

FROGS

RICE SNAKES

FROGS

GRASSHOPPERS

5. Which gas in the air would increase if a large number of trees were cut down?

a. carbon dioxide b. nitrogen c. oxygen d. water vapor 6. Jonalyn is a member of the program, Oplan Linis sa Ilog Pasig. In what way can she show her commitment to the program? a. dumping wastes at the Ilog Pasig b. Promoting Ilog Pasig as a dumping center mitigate c. programs that alleviate the worst condition of the Ilog Pasig d. activities in lined with the restoration of the Ilog Pasig 7. Why should we conserve our forest? a. Forests prevent flood. b. Forests give us lumber. c. forest are home of wild animals d. all of the above 8. When is man an enemy of the forest? a. When he cuts down trees b. When he plants young trees c. When he gets lumber in the forest d. When he does mountain climbing 9. What do you call the organisms that can manufacture their own food? a. carnivores b. consumers c. decomposers d. producers 10. The lion kills the deer before eating it. What do you call the lion in this relationship? a. prey b. predator c. parasite d. producers 11. Which is the primary consumer in the food chain: corn rat snake eagle? a. rat b. corn c. eagle d. snake 12. Many farm and forestlands are converted into housing areas. If more lands are used for residential purposes, how would this affect the environment? a. Reduced habitat of wild plants and animals b. Improved health and sanitation c. Decreased garbage problems d. More production of food 13. Which of the following is a destructive activity of human beings? a. tree planting b. muro-ami fishing c. burying biodegradable waste d. 3Rs 14. How do animals help plants? a. Animals supply plants with food. b. Animals give off oxygen needed by plants. c. Animals give off nitrogen needed by plants. d. Animals give off carbon dioxide needed by plants. 15. Which words refer to the transfer of food from plants to a series of consumers? a. food web b. food chain c. food series d. food pyramid 16. Which organism below can start a food chain? a. cow b. man c. worm d. rice plant 17. When a man eats both plants and animals, what do you call the man? a. carnivore b. herbivore c. omnivore d. producer 18. Why are plants called the world’s food manufacturer? a. because they are green b. because they live longer a. because they are eaten by animals d. because they can produce their own food 19. Which of the following breaks down dead bodies of plants and animals? a. consumer b. decomposer c. producer d. predator 20. What do you call the relationship of a group of animals fighting with each other to satisfy their needs? a. commensalism b. competition c. mutualism d. predation 21. Plants give off oxygen for animals to breathe and animals give off carbon dioxide needed by plants in manufacturing its own food. What relationship exists between plants and animals? a. commensalism b. competition c. mutualism d. predation 22. There are different relationships between and among organisms in an ecosystem. Which of the following shows a relationship where one is benefited while the other organism is neither benefited nor harmed? a. orchids and trunk of a tree b. man and hookworm c. clowfish and sea anemone d. bird and crocodile 23-24. Study the illustration carefully then answer the questions that follow:

1.

2.

3.

23. Which is the correct order in the food chain? a. 3 2 1 4 5 b. 3 5 4 2 1 c. 3 2 4 5 1 24. What is the correct order of the frog in the food chain? a. 1st-order consumer b. 2nd-order consumer

4.

5.

c. 3 1 5 2 4 c. 3rd-order consumer

d. 4th-order consumer

25-28. Study the illustration below then answer the questions that follow.

25. Which organism is not a herbivore? a. grasshopper b. raccoon c. mouse d. hawk 26. Which organism is a predator of the grasshopper? a. wolf b. mouse c. snake d. raccoon 27. Which of the following would be a prey and a predatory at the same time? a. hawk b. wolf c. snake d. grasshopper 28. If the number of grasshopper increases in number in a food chain, which animals will also increase? a. mouse and snake b. toad and mouse c. raccoon and wolf d. wolf, mouse and raccoon 29. Which of the following illustrations shows oxygen, carbon dioxide cycle? a.

b.

c.

d.

30. Why do you think kaingin system a bad practice? a. It pollutes rivers and seas. b. It pollutes mountains and forests. c. It deprives hunters of many wild animals d. It clears the land of trees which prevents flood. 31. To help in increasing people’s awareness on the effects of population, one must ______________. a. population campaign b. population commission c. population education d. population migration 32. Ela is a grade 6 pupil, she is much concerned in maintaining a healthful surroundings. Ela is _____________________. a. participating in tree planting b. throwing away plastics into rivers c. burying non-biodegradable materials d. dumping biodegradable materials in a nearby canal 33. The population of Barangay Masagana doubled in two years. What effect could this have on water supply? a. Water supply will be doubled. b. Water supply will be lessened. c. There would be more supply of water. d. There would be no change in water supply. 34. How can we improve water supply? a. by buying bottled water b. by contaminating water c. by conserving water d. by buying water purifier 35. What happens when there is rapid population growth? a. More jobs become available. b. There will be more pollution-free vehicles. c. Dumping of industrial wastes becomes less. d. Waste disposal system becomes a problem *36-40. Construct a food web using the following: (use the space provided in your answer sheet) plant

Prepared by: Abegail H. Laquiao

bird

rat

snake frog

man

cow

grasshopper

2nd Periodical Test Science 6 ANSWER SHEET Name: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34 35. 36.40 .

A

B

C

D

                                  

                                  

                                  

                                  

Table of Specification Science 6 Second Grading Period Objectives Explain the interrelationships between and among the components of an ecosystem Identify and describe the interrelationships among living organisms in an ecosystem food chain, food web, food nutrient cycle, oxygen-carbon cycle) Classify consumers as to the order in the food chain Identify the kind of interrelationships among living organisms Identify human activities that disrupt/sustain the cycles in an ecosystem Infer how certain events and activities disturb the interrelationship in an ecosystem Prepared by: Abegail H. Laquiao

ING

UNDERST ANDING

1,2

14,17

5,9,15,16,19

10,18

11

APPLYING

ANALYZING

EVALUATING

CREATING

29

3,4

36-40

25,26,27,28

12,32

23,24

20 7

21,22

35

33

6,8,13

30

31,34