Ecology Quiz 31 (25 MCQs)

Quiz Instructions:

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1. A species whose influence on its community is much larger that its relative biomass is termed a ..

2. The living or once living organisms in an ecosystem

3. Evidence shows that some grasses benefit from being grazed. Which of the following terms would best describe this plant-herbivore interaction?

4. The recolonization of a habitat following a specific event like flood, volcanic eruption, or climate change is referred to as:

5. The total amount of living tissue within a given trophic level is called the

6. What does the word traces mean in the sentence below? The miners found traces of gold in the stream.

7. Flowering plants are unique because their seeds are enclosed in:

8. Which of the following is an abiotic factor that could possibly decrease a population if it drastically changes?

9. All of the abiotic and biotic factors in an area.

10. In the energy pyramid, an organism that eats a producer is called the

11. Name the type of succession in which some life is left after a disturbance.

12. In ecology, succession refers to:

13. Consider the following food chain:Plants ( Insects ( Rodents ( SnakesWhich level in this food chain contains the most energy?

14. The Study of the relations of organisms to one another and their physical environment.

15. As a population grows, it will most likely stop growing at what size?

16. Genetic or situational traits or actions that help an organism better survive in their environment.

17. What is the study of living things

18. The lowest level of environmental complexity that includes living and nonliving factors is the

19. What type of species interaction is the following:two bears fighting over the same mate.

20. Which of the following is a density-independent limiting factor?

21. An organism that makes its own food is NOT called a heterotroph but an _____

22. The place where an organism lives inside of an ecosystem is called its

23. One organism benefits and the other is harmed

24. What is the original source of almost all energy in any ecosystems?

25. About how much of the energy in the producers of an ecosystem will be available to secondary consumers in this ecosystem?