Answers5120VB Environmental Science Sem B- BGlobal Connection: Deep Sea Ecologies

Topic Test Answers

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33
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Which of the following types of carbon fixation occurs in most plants?

A
C3
B
C4
C
CAM
D
none of the above
34
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Explain how the biomass of a species is limited by their trophic level.

Answer not available
35

Moving through trophic levels _______.

A
energy decreases
B
entropy increases
C
biomass decreases
D
all of the above
36

When sunlight strikes Earth, approximately _______.

A
30% is reflected back into space
B
70% is reflected back into space
C
50% is absorbed by the atmosphere
D
80% is absorbed by land and oceans
37

Explain how waste heat is inevitable in ecosystems.

Answer not available
38

Which of the following statements about energy and trophic levels is not true?

A
The amount of available energy decreases at each higher trophic level.
B
The energy conversion efficiency decreases at higher trophic levels.
C
The net production of energy is higher at lower trophic levels.
D
None of the above
39

Explain why energy in most ecosystems must flow from the sun, then to autotrophs and finally to heterotrophs, in that order.

Answer not available
40

Bacteria in soil feed on _______.

A
organic matter
B
nematodes
C
protozoa
D
fungi
41

Compare the process of carbon fixation in C3 plants to that of CAM plants.

Answer not available
42

Compare the light and dark reactions that occur in plants.

Answer not available
43

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44

Bacteria in soil feed on _______.

A
organic matter
B
nematodes
C
protozoa
D
fungi
45

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Answer not available

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