Question 1

The units used in the infographic below report total energy available from primary producers in indicated biomes in ________.

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Question 2

Compare and contrast grassy marsh wetlands to bogs and explain why one of these freshwater biomes is more productive than the other.

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Question 3

Strict vegetarians,or vegans,would be considered ________ consumers in an energy pyramid.

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Question 4

Explain how energy enters and progresses through a food chain.

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Question 5

Explain the difference in net primary productivity (NPP)between temperate grasslands and tropical grasslands.Include data units.

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Question 6

Using the food chain shown below,explain how many calories are available in the consumer trophic levels and why.

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Question 7

Describe how chemical nutrients enter and are recycled through an ecosystem.

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Question 8

Describe what estuaries are,where they can be found,their relative productivity,and the reasons for their productivity level.

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Question 9

Why don't ecosystems always have sharply defined physical boundaries?

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Question 10

Propose an explanation for why whales swimming up and down through the water column in the ocean ecosystem can help remove tons of carbon dioxide from the atmosphere each year.

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Question 11

Explain why only roughly 10 percent of the energy available in one trophic level is available in the next higher trophic level.

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Question 12

The amount of energy captured by photosynthetic organisms,minus the amount lost as heat from respiration and other life processes,is called ________.

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Question 13

Should the scientific community accept,without questions,Boyce,Worm,and Lewis's hypothesis that Earth's oceans are losing 500 million tons of phytoplankton per year? Support your answer.

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Question 14

The shallowest but most productive of the aquatic biomes are ________.These tidal ecosystems exist where rivers flow into the ocean.

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Question 15

How and why does the global pattern of net primary productivity (NPP)differ between the oceans and terrestrial ecosystems?

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Question 16

Regions of Earth that are defined by their unique climatic and ecological features are known as ________.The flora and fauna residing there are particularly adapted to the climate and defining ecological features.

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Question 17

On what four factors does net primary productivity rely,and what terrestrial ecosystem is the most productive because of these factors?

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Question 18

Since 1931,the phytoplankton biomass in the Northeast Atlantic Ocean has been monitored by the __________ (CPR)survey where a special instrument is pulled through the ocean by commercial fishing vessels to collect millions of sample of plankton.

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Question 19

Use examples to explain how an ecological community differs from an ecosystem.

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Question 20

Assessing the overall net primary productivity (NPP)of an ecosystem is important in determining how an ecosystem works,because ________ capture influences the amount of food available to other organisms in the ecosystem.

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Quiz 21: Ecosystems