Ecology Quiz 255 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. All the ponds in an area dried up during a drought. Which organism is most affected by the drought?

Correct Answer: B) Frog.

2. An organism that makes its own food using the sun's energy.

Correct Answer: A) Producer.

3. All of the energy in the ecosystem comes from

Correct Answer: B) The sun.

4. Without bacteria in the ecosystem, what would happen?

Correct Answer: D) Dead materials would pile up.

5. An organism that can produce its own food through photosynthesis

Correct Answer: C) Autotroph.

6. Net primary production in an ecosystem over a given period may be BEST defined as the total amount of

Correct Answer: D) New organic matter remaining after respiration and metabolism has been fuelled.

7. When organisms leave an ecosystem

Correct Answer: B) Emigration.

8. What does the term carrying capacity describe?

Correct Answer: D) The population size that the environment can sustain.

9. A ....., such as mushrooms, breaks down organic material.

Correct Answer: C) Decoposer.

10. Since frogs breathe through their skin, they do not easily absorb pollution

Correct Answer: B) False.

11. When nitrogen gas is turned in to a form that plants and animals can use, this is called:

Correct Answer: D) Nitrogen Fixation.

12. The place where an organism naturally lives and grows

Correct Answer: C) Habitat.

13. Increase-decrease

Correct Answer: B) Wrong.

14. An organism that eats both plants and animals is known as a(n)

Correct Answer: B) Omnivore.

15. Which of the following would be included in a drawing that BEST describes an ecosystem?

Correct Answer: A) All the plants, animals, and water in park.

16. Wha is Nature?

Correct Answer: D) Biodiversity.

17. Organisms that need nitrogen to survive

Correct Answer: D) All living organisms.

18. Examples of natural elements of the environment are:

Correct Answer: B) Water, animals, bacteria.

19. Shira and I have new bikes ..... bikes are red.

Correct Answer: C) Our.

20. Survival

Correct Answer: C) The state or fact of continuing to list or exist.