Ecology Quiz 278 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Invasive species have a negative impact on .....

Correct Answer: C) Both the ecosystem and the economy.

2. In most food webs, bacteria and fungi are labeled as the

Correct Answer: D) Decomposers.

3. When algae levels increase in a body of water, it

Correct Answer: A) Cuts off light to plants at the bottom.

4. Anytime there is a close and permanent association between organisms, it is known as .....

Correct Answer: B) Symbiosis.

5. The slight differences in stripe patterns in a zebra population is known as

Correct Answer: B) Variation.

6. The term abiotic means;-

Correct Answer: D) Non-living things.

7. How does Carbon get from animals to plants?

Correct Answer: B) In the air.

8. When organisms of different species compete for the same resources, it is called

Correct Answer: A) Interspecific competition.

9. The source of all energy is .....

Correct Answer: D) The Sun.

10. What is a defense strategy?

Correct Answer: C) A way to keep something from being eaten by a predator.

11. ..... are all organisms that break down dead/dying matter, and release carbon, nitrogen, phosphorous, etc. into their surroundings

Correct Answer: B) Decomposers.

12. Which level of organization is more complex than a population and less complex than an ecosystem?

Correct Answer: C) Community.

13. Carrying Capacity:definition

Correct Answer: D) The maximum number of individuals an environment can support.

14. All the biotic and abiotic factors in an area

Correct Answer: C) Ecosystem.

15. Carnivores, herbivores, omnivores, and scavengers are all examples of .....

Correct Answer: B) Consumers.

16. All organisms in a community

Correct Answer: C) Population.

17. What occurs when ice and snow change directly to water vapor?

Correct Answer: A) Sublimation.

18. Read the definition:It is when and animal or plant have to adjust to new surroundings or a new situation.

Correct Answer: A) Adapt.

19. What form of light from the Sun is important to warming Earth?

Correct Answer: B) Infrared.

20. Which of the following is an example of an abiotic limiting factor on population size?

Correct Answer: A) Water availability.