Ecology Quiz 47 (20 MCQs)

Quiz Instructions

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1. What kind of organism makes its own food?

Correct Answer: C) Producer.

2. Photosysnthesis and respiration are important because

Correct Answer: D) They cycle matter and energy between autotrophs and heterotrophs.

3. All populations living in an area

Correct Answer: A) Community.

4. Which trophic level has the greatest biomass?

Correct Answer: B) Producers.

5. Which of these is the ultimate source of energy in the energy pyramid

Correct Answer: C) Sunlight.

6. Birds live in the decidious forest.

Correct Answer: A) Habitat.

7. ..... factors in an ecosystem include plants, animals, and other organisms.

Correct Answer: A) Biotic.

8. The maximum number of organisms that an ecosystem can support with its resources

Correct Answer: B) Carrying capacity.

9. Which of the following can be control group?

Correct Answer: B) Individuals who were not exposed to TV.

10. Area that contains both abiotic and biotic factors

Correct Answer: C) Ecosystem.

11. When two organisms get energy from the same source, there is .....

Correct Answer: C) Competition.

12. Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?

Correct Answer: D) Grassland.

13. A keystone species has .....

Correct Answer: C) Big impact on ecosystem, small population.

14. Fresh water referrers to which of the following

Correct Answer: C) Lakes, ponds, streams.

15. What is the indirect source of most of our energy?

Correct Answer: B) The sun.

16. Biomes with densely packed trees sometimes form a continuous green "roof" layer called a:

Correct Answer: A) Canopy.

17. Two similar species living in the same niche would most likely ..... with each other for food.

Correct Answer: A) Compete.

18. Most organisms in an ecosystem eat only one type of organism

Correct Answer: B) False.

19. Organisms at the top of an energy pyramid have the ..... amount of energy.

Correct Answer: B) Least.

20. A community is .....

Correct Answer: B) Every Biotic factor in an environment, but none of the abiotic.