Question 1

Which of the following would be abiotic components of an arctic,marine ecosystem?

Accepted Answer

A) saltwater,ice,snow,sun,wind,rocks,sand 
B) polar bears,seals,salmon,seaweed,puffins 
C) buffalo,meadowlarks,eagles,grasses,cottonwood trees 
D) deer,skinks,squirrels,oak trees,pine trees,mosses 
A) saltwater,ice,snow,sun,wind,rocks,sand 
B) polar bears,seals,salmon,seaweed,puffins 
C) buffalo,meadowlarks,eagles,grasses,cottonwood trees 
D) deer,skinks,squirrels,oak trees,pine trees,mosses

Question 2

Match each term to its correct description below.
-This biome is dominated by dense growths of drought-resistant plants that thrive through the alternating cool,rainy winters and hot,dry summers.The vegetation includes scrub oak,pines,mountain mahogany,and manzanita.It is inhabited by jackrabbits,gophers,lizards,and snakes.

Accepted Answer

A) tropical forest 
B) chaparral 
C) boreal forest 
D) tundra 
E) desert
F)temperate deciduous forest
G)grassland 
A) tropical forest 
B) chaparral 
C) boreal forest 
D) tundra 
E) desert
F)temperate deciduous forest
G)grassland

Question 3

What is the primary difference between consumers and decomposers?

Accepted Answer

A) Consumers obtain their nutrients by eating other live organisms while decomposers obtain their nutrients from dead consumers. 
B) Consumers obtain their nutrients by eating only dead consumers while decomposers eat other live consumers. 
C) Consumers and decomposers both obtain all of their nutrients from eating other live organisms. 
D) Consumers obtain their nutrients by eating other live organisms while decomposers obtain their nutrients through photosynthesis. 
A) Consumers obtain their nutrients by eating other live organisms while decomposers obtain their nutrients from dead consumers. 
B) Consumers obtain their nutrients by eating only dead consumers while decomposers eat other live consumers. 
C) Consumers and decomposers both obtain all of their nutrients from eating other live organisms. 
D) Consumers obtain their nutrients by eating other live organisms while decomposers obtain their nutrients through photosynthesis.

Question 4

Why are deserts and tundra among the least productive terrestrial biomes?

Accepted Answer

A) Water is not very easily accessible by plants in desert and tundra biomes,and both of these biomes experience extreme temperature conditions.Water availability and temperature are important limiting factors in net primary productivity (NPP). 
B) There is too much water available in the tundra and not enough available in the desert.The extreme temperatures of these biomes do not affect NPP. 
C) There is not enough sunlight available in either the tundra or the desert biomes to sufficiently support NPP. 
D) There is far too much sunlight and water available in both the desert and tundra biomes.These factors cause photosynthesis to be suspended and result in dramatically decreased NPP. 
A) Water is not very easily accessible by plants in desert and tundra biomes,and both of these biomes experience extreme temperature conditions.Water availability and temperature are important limiting factors in net primary productivity (NPP). 
B) There is too much water available in the tundra and not enough available in the desert.The extreme temperatures of these biomes do not affect NPP. 
C) There is not enough sunlight available in either the tundra or the desert biomes to sufficiently support NPP. 
D) There is far too much sunlight and water available in both the desert and tundra biomes.These factors cause photosynthesis to be suspended and result in dramatically decreased NPP.

Question 5

Other than tropical forests,the most productive biomes tend to be

Accepted Answer

A) estuaries. 
B) deep oceans. 
C) deserts. 
D) tundras. 
A) estuaries. 
B) deep oceans. 
C) deserts. 
D) tundras.

Question 6

In marine ecosystems,net primary productivity tends to be

Accepted Answer

A) greater along shorelines where terrestrial nutrients enter the marine environment. 
B) lower where the oceans border land because terrestrial pollution suppresses marine productivity. 
C) lowest in areas where upwelling brings colder water to the surface. 
D) greater than the net primary productivity on land. 
A) greater along shorelines where terrestrial nutrients enter the marine environment. 
B) lower where the oceans border land because terrestrial pollution suppresses marine productivity. 
C) lowest in areas where upwelling brings colder water to the surface. 
D) greater than the net primary productivity on land.

Which of the following would be abiotic components of an arctic,marine ecosystem?

What is the primary difference between consumers and decomposers?

Why are deserts and tundra among the least productive terrestrial biomes?

Other than tropical forests,the most productive biomes tend to be

In marine ecosystems,net primary productivity tends to be

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Exam 18: Ecosystems

Which of the following would be abiotic components of an arctic,marine ecosystem?

What is the primary difference between consumers and decomposers?

Why are deserts and tundra among the least productive terrestrial biomes?

Other than tropical forests,the most productive biomes tend to be

In marine ecosystems,net primary productivity tends to be

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Applying the Science

Filters