Question 1

Which organism is most likely to have the highest assimilation efficiency?

Accepted Answer

A) endothermic carnivore,such as a lion 
B) ectothermic carnivore,such as a snake 
C) endothermic herbivore,such as a deer 
D) ectothermic herbivore,such as a grasshopper 
A) endothermic carnivore,such as a lion 
B) ectothermic carnivore,such as a snake 
C) endothermic herbivore,such as a deer 
D) ectothermic herbivore,such as a grasshopper

Question 2

Primary producers form the base of all food chains.

Accepted Answer

A) True 
 B)False

Question 3

Net primary productivity is generally greatest at

Accepted Answer

A) tropical latitudes near the equator. 
B) subtropical latitudes (e.g.,25° of latitude). 
C) temperate latitudes (e.g.,50° of latitude). 
D) polar latitudes (e.g.,80° of latitude). 
A) tropical latitudes near the equator. 
B) subtropical latitudes (e.g.,25° of latitude). 
C) temperate latitudes (e.g.,50° of latitude). 
D) polar latitudes (e.g.,80° of latitude).

Question 4

Secondary production in an ecosystem is always less than primary production.

Accepted Answer

A) True 
 B)False

Question 5

The amount of accumulated organic matter found in an area at a given time is the ________ crop biomass.

Accepted Answer

The answer of The amount of accumulated organic matter found...

Question 6

Primary productivity in forests often increases during the early stages of stand development and then decreases again as the forest ages and standing biomass increases.

Accepted Answer

A) True 
 B)False

Question 7

In most ecosystems,the biomass of carnivores is greater than the biomass of producers.

Accepted Answer

A) True 
 B)False

Question 8

In stream and river ecosystems,the grazing food chain is of minor importance compared with the detrital food chain.

Accepted Answer

A) True 
 B)False

Question 9

In all ecosystems,the biomass of primary producers is greater than the biomass of herbivores.

Accepted Answer

A) True 
 B)False

Question 10

Productivity may be expressed in units of energy per unit area per unit time or in units of dry organic matter per unit area per unit time.

Accepted Answer

A) True 
 B)False

Question 11

In most marine ecosystems,autochthonous inputs of organic carbon are greater than allochthonous inputs of carbon.

Accepted Answer

A) True 
 B)False

Question 12

Within any ecosystem,the two major food chains are the ________ food chain and the grazing food chain.

Accepted Answer

The answer of Within any ecosystem,the two major food chains...

Question 13

In a temperate rain forest,primary productivity remains relatively constant.

Accepted Answer

A) True 
 B)False

Question 14

A(n)________ chemical reaction must absorb energy in order to proceed.

Accepted Answer

The answer of A(n)________ chemical reaction must absorb energy in...

Question 15

Wealthy nations typically have lower rates of human appropriation of net primary productivity (HANPP)than developing nations.

Accepted Answer

A) True 
 B)False

Question 16

Net primary productivity in an ecosystem increases as mean annual temperature

Accepted Answer

A) and mean annual rainfall decrease. 
B) decreases and mean annual rainfall increases. 
C) increases and mean annual rainfall decreases. 
D) and mean annual rainfall increase. 
A) and mean annual rainfall decrease. 
B) decreases and mean annual rainfall increases. 
C) increases and mean annual rainfall decreases. 
D) and mean annual rainfall increase.

Question 17

The ________ law of thermodynamics states that when energy is transferred or transformed,part of the energy assumes a form that cannot pass on any further.

Accepted Answer

The answer of The ________ law of thermodynamics states that...

Question 18

Net primary productivity is greater in areas with a long photosynthetic period than in areas with a short photosynthetic period.

Accepted Answer

A) True 
 B)False

Question 19

Net primary productivity is greater in temperate grasslands than in tropical rain forest.

Accepted Answer

A) True 
 B)False

Question 20

The base of the detrital food chain is formed by

Accepted Answer

A) primary producers. 
B) decomposers. 
C) herbivores. 
D) dead organic matter. 
A) primary producers. 
B) decomposers. 
C) herbivores. 
D) dead organic matter.

Exam 21: Ecosystem Energetics

Which organism is most likely to have the highest assimilation efficiency?

Primary producers form the base of all food chains.

Net primary productivity is generally greatest at

Secondary production in an ecosystem is always less than primary production.

The amount of accumulated organic matter found in an area at a given time is the ________ crop biomass.

Primary productivity in forests often increases during the early stages of stand development and then decreases again as the forest ages and standing biomass increases.

In most ecosystems,the biomass of carnivores is greater than the biomass of producers.

In stream and river ecosystems,the grazing food chain is of minor importance compared with the detrital food chain.

In all ecosystems,the biomass of primary producers is greater than the biomass of herbivores.

Productivity may be expressed in units of energy per unit area per unit time or in units of dry organic matter per unit area per unit time.

In most marine ecosystems,autochthonous inputs of organic carbon are greater than allochthonous inputs of carbon.

Within any ecosystem,the two major food chains are the ________ food chain and the grazing food chain.

In a temperate rain forest,primary productivity remains relatively constant.

A(n)________ chemical reaction must absorb energy in order to proceed.

Wealthy nations typically have lower rates of human appropriation of net primary productivity (HANPP)than developing nations.

Net primary productivity in an ecosystem increases as mean annual temperature

The ________ law of thermodynamics states that when energy is transferred or transformed,part of the energy assumes a form that cannot pass on any further.

Net primary productivity is greater in areas with a long photosynthetic period than in areas with a short photosynthetic period.

Net primary productivity is greater in temperate grasslands than in tropical rain forest.

The base of the detrital food chain is formed by

The Nature of Ecology

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Species Interactions,population Dynamics,and Natural Selection

Interspecific Competition

Predation

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Factors Influencing the Structure of Communities

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Decomposition and Nutrient Cycling

Biogeochemical Cycles

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Large-Scale Patterns of Biological Diversity

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