Unit Test — Unit test Answers

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Which best explains why a thick tropical forest filled with large plants typically has a lot of water vapor in the air?

A
The plants undergo transpiration.
B
The plants undergo condensation.
C
The plants prevent water from evaporating.
D
The plants prevent water from becoming runoff.
3
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The diagram shows a forest food web.

Question illustration
A
rabbit
B
fox
C
grasshopper
D
shrew
4

White-tailed deer eat green plants, acorns, fruits, nuts, and twigs.Which describes the role of a white-tailed deer?

A
autotrophic omnivore
B
heterotrophic omnivore
C
autotrophic herbivore
D
heterotrophic herbivore
5

Which organisms release carbon dioxide as waste?

A
consumers only
B
consumers and decomposers
C
producers and decomposers
D
producers only
6

Which describes a relationship in which one organism kills and eats another organism?

A
mutualism
B
predation
C
competition
D
commensalism
7

The producer in an energy pyramid contains about 1,000 kcal of energy.About how much of this energy is used by the producer or lost as heat to the environment?

A
10 kcal
B
90 kcal
C
100 kcal
D
900 kcal
9

Which two levels of ecological organization include members of only a single species?

A
population and community
B
organism and population
C
community and organism
D
ecosystem and population
10

parasitismmutualismcommensalismpredation

A
parasitism
B
mutualism
C
commensalism
D
predation
11

Female chimpanzees that live together often help take care of one another’s young.This best demonstrates which type of relationship between the female chimpanzees living together?

A
cooperation
B
competition
C
predation
D
commensalism
12

The tropical pitcher plant is a unique plant that obtains its nutrition by digesting insects. The plant traps insects in its pitcher-shaped leaves and dissolves them as part of the digestion process. Tropical pitcher plants grow in warm, moist places in which the soil is poor in nutrients. Because of their feeding habits, pitcher plants are able to control the insect populations in the areas in which they live.

A
controlling insect populations
B
sharing a habitat with insects
C
having pitcher-shaped leaves
D
being a unique type of plant
13

Which human activity will most likely contribute to ozone layer destruction?

A
cutting down trees to build a library
B
using fertilizer to grow bean crops
C
planting flowers that come from another area
D
frequently using an air conditioner in the home
14

An adult panda bear must eat at least 30 pounds of bamboo in a day. There are 12 adult pandas living in part of a bamboo forest.How many pounds of bamboo, at minimum, must be available each day in order to support the population of pandas?

A
12
B
30
C
348
D
360
15

Sydney drew a flow chart to illustrate the nitrogen cycle.

Question illustration
A
X: Producers undergo photosynthesis.Y: Nitrogen compounds are released into the air.
B
X: Nitrogen compounds are released into the air.Y: Producers undergo photosynthesis.
C
X: Free nitrogen is in the atmosphere.Y: Producers absorb nitrogen compounds through their roots.
D
X: Producers absorb nitrogen compounds through their roots.Y: Free nitrogen is in the atmosphere.

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