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The Tundra Answers

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21
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What is the purpose of the dense hairs around the flowers of the woolly lousewort?

A
The dense hairs keep moisture off the flower.
B
The dense hairs trap heat from the sun.
C
The dense hairs protect the flower from caribou.
D
The dense hairs keep the flower’s seeds from blowing away.
22
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Organisms that live in the tundra biome have developed unique adaptations that aid in their survival. Which of the following adaptations is not seen in the tundra bumblebee?

A
Its body is covered in dense hairs that help it conserve heat.
B
It is active only under warm conditions.
C
It can “shiver” to generate heat.
D
It is able to keep its body temperature approximately 75ºF above ambient temperature.
23

Why is there limited vegetation in the tundra?

A
The soil is frozen and devoid of nutrients.
B
There is frequent flooding and the soil is nutrient-poor.
C
There is frequent flooding and the soil is nutrient-rich.
D
The soil is frozen and contains pockets rich in nutrients.
24

What characteristic about the tundra biome listed below does not contribute to a reduction of carbon dioxide on Earth?

A
nutrient-poor soil
B
permafrost
C
plants and their trapped carbon dioxide are frozen in the earth
D
carbon dioxide sink
25

Which of the following statements about the tundra is true?

A
The tundra has a dense covering of trees.
B
There are two main categories of the tundra biome.
C
Temperatures in the tundra range from extreme highs to extreme lows.
D
The tundra biome does not support animal life.
26

Organisms that live in the tundra have developed unique adaptations that aid in their survival. Ursus maritimus has a variety of adaptations which enable it to survive in the tundra. It is the largest terrestrial carnivore, but it is also an excellent swimmer that spends much of its time in and near the water hunting its favorite food. It has large paws with small bumps to provide traction as it walks across the ice. Its fur is helpful as camouflage during the winter months, but not as helpful during the summer. Which organism has the adaptations described that enable it to survive in the tundra?

A
harp seal
B
arctic fox
C
polar bear
D
Kodiak bear
27

Which of the following plants is not found in the tundra?

A
caribou moss
B
lousewort
C
bearberry
D
ocotillo
28

The tundra is located _______.

A
north of the equator
B
south of the equator
C
along the equator
D
both north and south of the equator

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