Biology Ch 4

1. Biology Ch 4 Mouse Mischief Review

2. Organisms living in a community and all the physical parts of its environment make up a(n) ecosystem. habitat. food chain.

3. The most important abiotic factor for the organisms in an ecosystem is sunlight. weather. water.

4. Animals that feed on plants are at least in the first trophic level second trophic level third trophic level

5. The many different species that live together in a habitat are called a(n) ecology food chain. community.

6. An organism that gets energy from organic wastes and dead bodies is a(n) omnivore. producer. decomposer

7. The number of trophic levels in an energy pyramid is seldom more than four. always exactly four. never less than four.

8. Which process takes carbon dioxide from the atmosphere? photosynthesis decomposition combustion

9. Which process returns carbon dioxide to the atmosphere? combustion decomposition Both (a) and (b

10. Which process contributes to the formation of fossil fuels? combustion decomposition Both (a) and (b

11. How do animals contribute carbon dioxide to the atmosphere? by cellular respiration by their decomposition Both (a) and (b)

12. The production of ammonia by bacteria during the decay of animal waste is called assimilation. ammonification. nitrification. denitrification.

13. Grizzly bears, snakes, and worms can be members of the same species. trophic level. ecosystem. None of the abov

14. All the organisms that live in a particular place and the physical aspects of that place make up a(n) ecosystem. Habitat. community. food chain.

15. The number of species living in an ecosystem is referred to as succession. biodiversity. the food chain productivity

16. The most important abiotic factor for the organisms in an ecosystem is climate sun. weather. water

17. Animals that feed on plants are in which of the following? First trophic level Second trophic level Third trophic level Fourth trophic level

18. The number of trophic levels in an ecological pyramid is limitless is limited by the amount of energy that is lost at each trophic level never exceeds four. never exceeds thre

19. The movement of substances, such as water and nitrogen, in a circular path between the nonliving environment and living organisms is called a reservoir pathway. photosynthesis. cycles of matter. succession

20. In a typical succession initiated by a retreating glacier, pioneer plants precede trees. the first plants contribute to soil formation. it takes many years for trees to be able to thrive. All of the above

21. Algae are producers. consumers. parasites. decomposers.

22. Leopard seals are producers. consumers. parasites. decomposers.

23. Organisms that obtain their energy from the organic wastes and dead bodies at all the energy levels in an ecosystem are called decomposers. producers. consumers. herbivores.

24. Every time energy is transferred in an ecosystem, potential energy is lost as heat. due to weather. because some animals die. when it is recycled back to producers.