Question 1

Which of the following biomes has the overall harshest conditions for organism survival?

Accepted Answer

A)  tropical rain forest 
B)  eastern deciduous forest 
C)  arctic tundra 
D)  grasslands 
E)  savanna 
A)  tropical rain forest 
B)  eastern deciduous forest 
C)  arctic tundra 
D)  grasslands 
E)  savanna

Question 2

Compare the mean annual temperature and precipitation ranges required for the following biomes: temperate deciduous forest, tropical rainforest, and tundra.

Accepted Answer

The temperate deciduous forest has a mea

Question 3

Which biome is characterized by little rainfall, no trees, permafrost, and reindeer?

Accepted Answer

A)  grasslands 
B)  temperate deciduous forest 
C)  desert 
D)  taiga 
E)  tundra 
A)  grasslands 
B)  temperate deciduous forest 
C)  desert 
D)  taiga 
E)  tundra

Question 4

The open sunlit layer within a lake is the

Accepted Answer

A)  littoral zone. 
B)  limnetic zone. 
C)  profundal zone. 
D)  benthic zone. 
E)  abyssal zone. 
A)  littoral zone. 
B)  limnetic zone. 
C)  profundal zone. 
D)  benthic zone. 
E)  abyssal zone.

Question 5

Alpine tundra is found on the top of mountains while arctic tundra is found close to the North Pole. These two biomes have similar plants and animals even though they can be located in very different regions of the world. Why are these two biomes so similar?

Accepted Answer

A)  Both alpine tundra and arctic tundra are found close to coniferous forests. 
B)  Alpine tundra is cold and dry because it is at a high latitude and arctic tundra is cold and dry because it is at a high altitude. 
C)  Both types of tundra are located in areas of intense sunshine. 
D)  Alpine tundra grows mostly grasses because the soil is poor and arctic tundra grows mostly grasses because the soil is frozen. 
E)  Both types of tundra support large grazing herds that keep the grasses clipped short. 
A)  Both alpine tundra and arctic tundra are found close to coniferous forests. 
B)  Alpine tundra is cold and dry because it is at a high latitude and arctic tundra is cold and dry because it is at a high altitude. 
C)  Both types of tundra are located in areas of intense sunshine. 
D)  Alpine tundra grows mostly grasses because the soil is poor and arctic tundra grows mostly grasses because the soil is frozen. 
E)  Both types of tundra support large grazing herds that keep the grasses clipped short.

Question 6

Which would be characterized by rainfall under 25 cm/year, hot days, cold nights, and spiny-leafed plants?

Accepted Answer

A)  grasslands 
B)  temperate deciduous forest 
C)  desert 
D)  taiga 
E)  tundra 
A)  grasslands 
B)  temperate deciduous forest 
C)  desert 
D)  taiga 
E)  tundra

Question 7

How does temperature change in relation to the latitude?

Accepted Answer

A)  Moving away from the equator toward the North Pole, the temperature increases. Moving away from the equator toward the South Pole, the temperature decreases. 
B)  Moving away from the equator toward either the North Pole or the South Pole, the temperature decreases. 
C)  Moving away from the equator toward either the North Pole or the South Pole, the temperature increases. 
D)  Moving away from the equator toward either the North Pole or the South Pole, the temperature increases until 60° and then it decreases. 
E)  There is no relationship between temperature and latitude. 
A)  Moving away from the equator toward the North Pole, the temperature increases. Moving away from the equator toward the South Pole, the temperature decreases. 
B)  Moving away from the equator toward either the North Pole or the South Pole, the temperature decreases. 
C)  Moving away from the equator toward either the North Pole or the South Pole, the temperature increases. 
D)  Moving away from the equator toward either the North Pole or the South Pole, the temperature increases until 60° and then it decreases. 
E)  There is no relationship between temperature and latitude.

Question 8

The bottom of a lake or stream that harbors worms, clams, and other organisms in the

Accepted Answer

A)  littoral zone. 
B)  limnetic zone. 
C)  profundal zone. 
D)  benthic zone. 
E)  abyssal zone. 
A)  littoral zone. 
B)  limnetic zone. 
C)  profundal zone. 
D)  benthic zone. 
E)  abyssal zone.

Question 9

What environmental factor makes it very difficult for organisms that live in estuaries?

Accepted Answer

A)  the movement of water as the river flows into the ocean 
B)  the constant fluctuation in the salinity of the water as the salt water and fresh water mix 
C)  the fluctuating nutrient levels as the river brings different levels of nutrients to the estuary 
D)  the change in water levels as the tide ebbs and flows 
E)  the change in the temperature of the water since the river water is colder than the ocean 
A)  the movement of water as the river flows into the ocean 
B)  the constant fluctuation in the salinity of the water as the salt water and fresh water mix 
C)  the fluctuating nutrient levels as the river brings different levels of nutrients to the estuary 
D)  the change in water levels as the tide ebbs and flows 
E)  the change in the temperature of the water since the river water is colder than the ocean

Question 10

The ocean

Accepted Answer

A)  lacks life below the first several hundred feet. 
B)  has zooplankton but not phytoplankton. 
C)  covers little of the Earth's surface. 
D)  is not affected by freshwater pollution. 
E)  covers three-fourths of the planet. 
A)  lacks life below the first several hundred feet. 
B)  has zooplankton but not phytoplankton. 
C)  covers little of the Earth's surface. 
D)  is not affected by freshwater pollution. 
E)  covers three-fourths of the planet.

Question 11

When an ocean current brings cold, nutrient-rich water to the surface, it is called a(n)

Accepted Answer

A)  tide. 
B)  lake effect. 
C)  upwelling. 
D)  monsoon. 
E)  overturn. 
A)  tide. 
B)  lake effect. 
C)  upwelling. 
D)  monsoon. 
E)  overturn.

Question 12

Which of the following is the correct sequence of the different zones in the open ocean (top to bottom)?

Accepted Answer

A)  abyssal, bathypelagic, mesopelagic, epipelagic 
B)  abyssal, mesopelagic, bathypelagic, epipelagic 
C)  epipelagic, bathypelagic, mesopelagic, abyssal 
D)  epipelagic, abyssal, bathypelagic, mesopelagic 
E)  epipelagic, mesopelagic, bathypelagic, abyssal 
A)  abyssal, bathypelagic, mesopelagic, epipelagic 
B)  abyssal, mesopelagic, bathypelagic, epipelagic 
C)  epipelagic, bathypelagic, mesopelagic, abyssal 
D)  epipelagic, abyssal, bathypelagic, mesopelagic 
E)  epipelagic, mesopelagic, bathypelagic, abyssal

Question 13

The part of a lake where light does not penetrate is the

Accepted Answer

A)  littoral zone. 
B)  benthic zone. 
C)  pelagic zone. 
D)  profundal zone. 
E)  limnetic zone. 
A)  littoral zone. 
B)  benthic zone. 
C)  pelagic zone. 
D)  profundal zone. 
E)  limnetic zone.

Question 14

Which of the following is an area where fresh and salt water meet and mix?

Accepted Answer

A)  lake 
B)  river 
C)  estuary 
D)  stream 
E)  pond 
A)  lake 
B)  river 
C)  estuary 
D)  stream 
E)  pond

Exam 36: Major Ecosystems of the Biosphere

Which of the following biomes has the overall harshest conditions for organism survival?

Compare the mean annual temperature and precipitation ranges required for the following biomes: temperate deciduous forest, tropical rainforest, and tundra.

Which biome is characterized by little rainfall, no trees, permafrost, and reindeer?

The open sunlit layer within a lake is the

Alpine tundra is found on the top of mountains while arctic tundra is found close to the North Pole. These two biomes have similar plants and animals even though they can be located in very different regions of the world. Why are these two biomes so similar?

Which would be characterized by rainfall under 25 cm/year, hot days, cold nights, and spiny-leafed plants?

How does temperature change in relation to the latitude?

The bottom of a lake or stream that harbors worms, clams, and other organisms in the

What environmental factor makes it very difficult for organisms that live in estuaries?

The ocean

When an ocean current brings cold, nutrient-rich water to the surface, it is called a(n)

Which of the following is the correct sequence of the different zones in the open ocean (top to bottom)?

The part of a lake where light does not penetrate is the

Which of the following is an area where fresh and salt water meet and mix?

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