Social Behavior — Unit test Answers

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Which best describes what happens when an animal does not form a social group?

A
Foraging is more difficult when hunting a large prey.
B
Reproduction is easier because of access to multiple mates.
C
Fighting off predators is easier with one individual.
D
The division of labor is more difficult as it increases competition.
4

Humans process some foods by adding chemicals to reduce harmful bacterial growth. This allows foods to be edible for longer periods of time. Which best describes the advantages of food processing?

A
control of density-independent limiting factors such as disease spread
B
control of density-dependent limiting factors such as disease spread
C
control of density-dependent limiting factors such as predation
D
control of density-independent limiting factors such as predation
7

A muskrat population is growing exponentially. What might cause this population to enter logistic growth?

A
resources become scarce
B
birth rate increases
C
emigration decreases
D
carrying capacity is increased
8

The size of a food chain can vary, but the number of levels that a food chain can reach is limited.Why does this limit exist?

A
Plants are not infinite in number.
B
Producers are limited by consumers.
C
Carnivores are too large to be eaten.
D
Energy is lost at each trophic level.
10

Which animals form a eusocial society?

A
ants
B
cheetahs
C
polar bears
D
moose
12

Pandas eat bamboo for energy. What are pandas classified as?

A
producers
B
consumers
C
decomposers
D
autotrophs
13

How do limiting factors most affect population size?

A
stop population growth
B
restrict population growth
C
increase population growth
D
decrease population growth
14

How would a harsh winter most likely affect the rabbit population size?

A
population decreases
B
population increases
C
population reaches carrying capacity
D
population completely dies off

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