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Populations and the Environment — Quiz Answers

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1
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What is an organism’s niche?

A
the traits that increase an organism’s survival
B
the competitors and predators of the organism
C
the physical environment of the organism
D
the role that an organism plays in the environment
2
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Which describes the habitat of a frog?

A
eats insects
B
marshes and ponds
C
color for camouflage
D
prey for snakes
4

Which principle states that two species in the same habitat cannot have the same niche?

A
habitat exclusion principle
B
competitive exclusion principle
C
niche exclusion principle
D
population exclusion principle
6

Which is a biotic factor?

A
rock
B
drop of water
C
rotting carcass
D
fire
7

Why is a shell considered to be biotic?

A
because it is found in the biosphere
B
because it came from something living
C
because it was alive
D
because it is not living
8

Which describes a grizzly bear’s habitat?

A
the physical area where the bear lives
B
all the biotic factors in the ecosystem
C
all the abiotic factors in the ecosystem
D
the role of the bear in the ecosystem
9

A rock is classified as

A
living and abiotic.
B
nonliving and biotic.
C
living and biotic.
D
nonliving and abiotic.
10

Which is biotic?

A
snow
B
leaf
C
water
D
soil

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