Ecology Quiz 244 (20 MCQs)

Quiz Instructions

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1. The Earth's food chain starts with:

Correct Answer: B) Plants.

2. A group of different populations that live together

Correct Answer: A) Community.

3. Which is an "abiotic factor" in an ecosystem?

Correct Answer: D) Rock.

4. Which of the following limiting factors is NOT a density independent limiting factor?

Correct Answer: C) Disease.

5. A group of deer, chipmunks, otters, and insects is a .....

Correct Answer: C) Community.

6. What is the role of dead leaves in an ecosystem?

Correct Answer: B) Provides nutrients to other plants.

7. Bacteria are important in the nitrogen cycle because they

Correct Answer: A) Help convert nitrogen into a form that organisms can use.

8. Which of the following are NOT density dependent factors?

Correct Answer: D) Natural disasters.

9. An animal that is eaten is called .....

Correct Answer: A) Prey.

10. Radioactive decay

Correct Answer: D) Radioactive decay.

11. The Eagle in the food web represents a:

Correct Answer: D) Tertiary Comsumer.

12. The source of all energy transferred among organisms is .....

Correct Answer: C) The Sun.

13. Why are bees considered a keystone species?

Correct Answer: B) They pollinate flowers that produce fruit which supports the ecosystem.

14. Which best defines a population?

Correct Answer: D) All the interbreeding members of a certain species in an ecosystem .

15. The three domains of Biosphere are:

Correct Answer: A) Land, water and air.

16. What impact does deforestation have on the carbon cycle?

Correct Answer: A) Increase in amount of CO2 in the atmosphere.

17. Has cytoplasm

Correct Answer: C) Both.

18. Problem caused by increased levels of CFC's in the atmosphere

Correct Answer: D) Ozone depletion.

19. Eats other organisms

Correct Answer: C) Consumer.

20. A very big fish-

Correct Answer: A) A whale.