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Multiple Choice Feedback Quiz
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1

A collection of creatures that live in a particular place is a(n)
A)ecosystem.
B)community.
C)habitat.
D)trophic level.
2

A self-sustaining collection of organisms and their physical environment is a(n)
A)ecosystem.
B)community.
C)habitat.
D)trophic level.
3

Which one of the following would be a detritivore?
A)a snake
B)a mouse
C)a bacterium
D)a deer
4

Organisms in trophic level 3 are
A)detritivores.
B)herbivores.
C)carnivores.
D)producers.
5

Which of the following are producers?
A)termites
B)bacteria
C)algae
D)grasshoppers
6

About ____ of the energy captured by plants ends up being stored by producers.
A)90%
B)75%
C)50%
D)25%
7

When a carnivore eats a herbivore, about ____ of the energy in the herbivore molecules is lost.
A)90%
B)75%
C)50%
D)25%
8

The greatest variety of organisms in the oceans occurs in the
A)shallow water.
B)open sea surface.
C)deep sea water.
D)profundal zone.
9

Which one of the following is not a biome?
A)taiga
B)tundra
C)desert
D)estuary
10

At least half of the terrestrial plants and animals occur in which biome?
A)savanna
B)grassland
C)deciduous forest
D)rain forest
11

The habitat is the place where a community of organisms lives.
A)true
B)false
12

The origin of the energy found in food is green plants.
A)true
B)false
13

The lowest trophic level in any ecosystem is occupied by the detritivores.
A)true
B)false
14

The maximum number of trophic levels in an ecosystem is determined by the diversity of the organisms in the ecosystem.
A)true
B)false
15

Water, soil nutrients, and energy are recycled within ecosystems.
A)true
B)false
16

Nitrogen fixation converts ammonia to nitrogen gas, making it usable by most plants.
A)true
B)false
17

Eutrophication is caused by an abundance of phosphorus in aquatic ecosystems.
A)true
B)false
18

Death Valley is the result of the rain shadow effect from Mount Whitney, the tallest mountain in the Sierra Nevadas.
A)true
B)false
19

Oligotrophic lakes are rich in oxygen, but poor in nutrients and organic materials.
A)true
B)false
20

Estuaries are among the most naturally fertile areas in the world.
A)true
B)false





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