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Chapter 1 Review
Nutrient Cycles and Energy Flow
Multiple Choice
For each question below, select the best answer.
1. Which interaction is an example of competition?
a. A mushroom grows next to a tree.
b. A red-tailed hawk hunts a rabbit.
c. A spider spins a web to catch flying insects.
d. Brainworms infect a moose.
e. Two species of fish try to occupy the same
space.
5. Which diagram shows the trophic levels in order
from lowest trophic level to highest tropic level?
2. In which nutrient cycle does carbon dioxide play an
important role?
a. carbon c ycle
b. nitrogen cycle
c. oxygen cycle
d. phosphorus cycle
e. water cycle
3. Which sphere includes all of the water on Earth,
including liquid water, ice, and water vapour?
a. atmo sphere
b. biosphere
c. ecosphere
d. hydrosphere
e. litho sphere
4. Which process results in the build-up of toxins in an
organism's body because the organism ingests toxins
at a faster rate than it eliminates them?
a. bioaccumulation
b. competition
c. evaporation
d. fermentation
e. predation
6. Which process is part of the water cycle?
a. biomagnification
b. cellular respiration
c. fermentation
d. photosynthesis
e. precipitation
7. Which process can lead to acid precipitation?
a. bioaccumulation
b. cellular respiration
c. evaporation
d. fossil fuel combustion
e. photosynthesis
Chapter 1 Review
Nutrient Cycles and Energy Flow
Written Answer
Answer the following questions in your notebook.
9. If energy efficiency is about 10 percent, calculate the amount of energy that reaches
a secondary consumer if the producer contains about 4237 units of energy.
10. The diagram below shows the processes of photosynthesis and cellular respiration in a
plant leaf. Why do you think cellular respiration is the dominant process at night, whereas
photosynthesis is the dominant process during the day?
12. Explain the principle of biomagnification by using the relationships between members of the
first three trophic levels.
13. How does learning how ecosystems function help government officials make decisions
about social policies, such as urban planning and energy policies?
14. Explain the differences among herbivores, omnivores, and carnivores.
15. How do plants use sunlight to generate energy for life processes?
16. Compare and contrast producers and consumers.