Chapter 57 – Dynamics of Ecosystems
Chapter 57
Dynamics of Ecosystems
Multiple Choice Questions
1. Which of the following is a producer?
Chapter 57 – Dynamics of Ecosystems
57-2
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Chapter 57 – Dynamics of Ecosystems
2. A ____________ cycle is a cyclic path that involves both biological and chemical
processes of an ecosystem.
3. A(n) ________ is a permeable underground layer of rock, sand, and gravel saturated with
groundwater.
Chapter 57 – Dynamics of Ecosystems
4. The upper, unconfined portion of the groundwater constitutes the ____, which flows into
streams and is partly accessible to plants.
5. The balance between photosynthesis and ___________ is altered by the combustion of
fossil fuels.
Check All That Apply Questions
6. In which of the following ways does species richness affect ecosystem function? Check all
that apply.
Chapter 57 – Dynamics of Ecosystems
Multiple Choice Questions
7. Heterotrophs must obtain organic molecules that have been synthesized by
8. NPP is the difference between plant photosynthesis and respiration. Therefore, NPP
quantifies the net absorption of what element(s) by living plants?
Chapter 57 – Dynamics of Ecosystems
57-6
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process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 57 – Dynamics of Ecosystems
9. A wolf that feeds on moose and elk would be classified within which trophic level?
Chapter 57 – Dynamics of Ecosystems
57-8
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process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 57 – Dynamics of Ecosystems
57-9
10. Only about ____ of the sunlight falling on plant leaves is captured by photosynthesis.
True / False Questions
11. Solar energy is the same thing as heat energy.
Multiple Choice Questions
Chapter 57 – Dynamics of Ecosystems
12. Which of the following atmospheric gas is changing the global climate?
13. The honey possum (Tarsipes rostratus) is a tiny Australian marsupial that feeds entirely
on nectar. Which of the following terms describes the role of a honey possum in its
ecosystem?
Chapter 57 – Dynamics of Ecosystems
57–11
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Chapter 57 – Dynamics of Ecosystems
57–12
14. Vampire squid (Vampyroteuthisinfernalis) are deep-sea cephalopods with features similar
to both octopus and squid. Extensive video recordings show the diet of the vampire squid
consists of items like crustacean remains and fecal pellets. Which of the following terms
describes the position of the vampire squid in the deep-sea trophic pyramid?
Chapter 57 – Dynamics of Ecosystems
Clarify Question
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What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
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What do you already know about trophic levels?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 57 – Dynamics of Ecosystems
Check All That Apply Questions
15. Which of the following are true about ecosystems? Check all that apply.
Multiple Choice Questions
16. Over tropical rainforest areas, approximately 90% of the water that reaches the
atmosphere comes from
17. In the carbon cycle, ______ from the atmosphere is used in photosynthesis to synthesize
carbon-containing organic molecules in a process called ______.
Chapter 57 – Dynamics of Ecosystems
18. Even though nitrogen constitutes 78% of Earth’s atmosphere, the amount available for
living things nearly all comes from
19. With almost no exceptions, the nitrogen fixers are
Chapter 57 – Dynamics of Ecosystems
20. The form of nitrogen most likely to be absorbed from the soil by plants is
21. Which of the following biogeochemical cycles contain a mineral component?
22. The scarcity of which two elements limits plant growth?
Chapter 57 – Dynamics of Ecosystems
23. Which of the following groups do not contain any species that are autotrophs?
24. Energy enters most ecosystems by the process of
25. The net weight of all of the organisms living in an ecosystem is its
Chapter 57 – Dynamics of Ecosystems
26. In an ecosystem, the amount of organic matter produced in a given time that is available
for heterotrophs is known as
27. A good average value for the amount of energy that reaches the next trophic level is about
28. The rate of production of new biomass by heterotrophs is called
Chapter 57 – Dynamics of Ecosystems
29. Which one of the following factors would NOT influence the productivity of an ocean
community?
Chapter 57 – Dynamics of Ecosystems
57–20
Clarify Question
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What is the key concept addressed by the question?
•
What type of thinking is required?
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•
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•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?