Answers26-27 - C - RUSD Environmental Science S1Freshwater and Marine Biomes

Freshwater and Marine Biomes — Unit test Answers

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1
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What types of organisms will be affected by a decreased supply of water in an ecosystem?

A
Producers, consumers, and decomposers will be affected.
B
Producers and consumers will be affected.
C
Consumers and decomposers will be affected.
D
No organisms will be affected.
2
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How are the carbon, nitrogen, and oxygen cycles similar?

A
They are all biogeochemical cycles.
B
They all involve an interaction between living and nonliving elements.
C
They are all part of the Earth system.
D
All of the above.
3

Which of the following typical adaptations of marine animals is not found in sea otters?

A
streamlined body
B
webbed hands and feet
C
body covered in thick fur
D
breathing apparatus on the top of the head
4

Water stored in snow and ice can return directly to the atmosphere through the process of sublimation. Please select the best answer from the choices provided

A
T
B
F
5

Which of the following statements is true?

A
The nitrogen cycle is the most important cycle for life.
B
The oxygen cycle is the least important cycle for life.
C
Life can be sustained without any of the cycles for life present.
D
All cycles of matter are equally important for life to be sustained.
6

Transitions between biomes do not have to be sharp and sudden, which means that different biomes can share characteristics.

A
T
B
F
7

Which of the following is a way humans have impacted the rainforests, but not the tundra?

A
oil drilling
B
mining
C
overgrazing
D
logging
8

The majority of water on the Earth is usable by plants and animals.

A
T
B
F
9

If a stationary body of water has a constant temperature from top to bottom it is most likely a(n) _______.

A
lake
B
pond
C
ocean
D
lagoon
10

Which of the following is most likely to be a limiting factor for growth on the floor of a tropical rainforest?

A
water
B
shelter
C
sunlight
D
prey
11

Which of the following is not an example of interactions between biotic and abiotic factors in an ecosystem?

A
flowers opening at dawn and closing at night
B
bears hibernating in winter
C
male elk fighting over a female
D
Monarch butterflies migrating to Mexico for the winter
12

Which of the following is a specialist species?

A
Giant Pandas
B
Horses
C
Humans
D
Rabbits
13

The inversion of terrestrial and aquatic energy pyramids is dependent upon the nature of that environment’s particular _______.

A
decomposers
B
climate
C
primary consumers
D
producers
14

Which of the following is not used to classify biomes?

A
weather patterns
B
continent
C
dominant plant life
D
geographical terrain
15

Which of the following statements about positive feedback mechanisms is not true?

A
Positive feedback mechanisms can result from human activity.
B
Positive feedback mechanisms can occur naturally.
C
Positive feedback mechanisms lead to increased change.
D
Positive feedback mechanisms reduce change in a system.
16

Which of the following represents change to an ecosystem brought about by abiotic factors?

A
the decrease in plant populations due to a decrease in the available water supply
B
the increase in a predator population due to the increase in prey population
C
the decrease in plant species due to herd grazing
D
the extinction of a plant species due to bacterial infection
17

Which of the following is a way humans have impacted the rainforests, but not the tundra?

A
oil drilling
B
mining
C
overgrazing
D
logging
18

The majority of water on the Earth is usable by plants and animals.

A
T
B
F
19

The biosphere is the only one of Earth’s systems that contains life.

A
T
B
F
20

Plants in the rainforest contribute to precipitation there through transpiration.

A
T
B
F

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