Question 1

In an energy pyramid, what typically happens to the energy as you move from one trophic level to the next higher level?

Accepted Answer

The energy decreases significantly as you move up each level.

Answer

The energy increases as you go up each level.

Answer

The energy decreases slightly but not significantly.

Answer

The energy remains constant at each level.

Question 2

Which of the following best represents the energy transfer efficiency between trophic levels in an energy pyramid?

Accepted Answer

Only about 10% of energy is transferred from one trophic level to the next.

Answer

Energy transfer is 100% efficient between trophic levels.

Answer

Approximately 50% of energy is transferred between trophic levels.

Answer

About 25% of energy is transferred to the next trophic level.

Question 3

What is the primary reason for the decrease in energy available at higher trophic levels in an energy pyramid?

Accepted Answer

Energy is lost as heat during metabolic processes.

Answer

Energy is fully consumed at each level.

Answer

Energy increases stability at the top levels.

Answer

Energy is doubled at each trophic level but spreads wider.

Question 4

In an ecosystem represented by an energy pyramid, which trophic level would you expect to have the least amount of energy available?

Accepted Answer

The top predator trophic level.

Answer

The decomposer level.

Answer

The primary producer level.

Answer

The herbivore level.

Question 5

Which component of an energy pyramid contains the greatest amount of biomass?

Accepted Answer

The primary producers at the base level.

Answer

The top-level predators.

Answer

The decomposers at each level.

Answer

The primary consumers above producers.

Question 6

What happens to the amount of usable energy as it moves through successive trophic levels in an energy pyramid?

Accepted Answer

The amount of usable energy decreases at each successive level.

Answer

The amount of usable energy remains constant at each level.

Answer

The amount of usable energy increases as you move up the pyramid.

Answer

Usable energy is regenerated at each higher trophic level.

Question 7

Why does an energy pyramid typically have a smaller top level compared to the base level?

Accepted Answer

Due to significant energy loss at each trophic level, fewer tertiary consumers can be supported.

Answer

Decomposers reduce space availability at higher levels.

Answer

The ecosystem naturally limits the size of higher levels.

Answer

Producers occupy less space in physical area than consumers.

Question 8

In an energy pyramid, what role do primary producers play regarding energy capture?

Accepted Answer

Primary producers capture solar energy and convert it into chemical energy.

Answer

Primary producers consume herbivores and transfer energy upwards.

Answer

Primary producers recycle nutrients between trophic levels.

Answer

Primary producers decompose organic material for energy.

Question 9

Which trophic level in an energy pyramid is responsible for converting inorganic carbon into organic compounds using sunlight?

Accepted Answer

The primary producers at the base level.

Answer

The decomposers at all levels.

Answer

The tertiary consumers at the top level.

Answer

The secondary consumers in the middle level.

Question 10

How does energy loss at each trophic level in an energy pyramid affect the number of organisms that can be supported at higher levels?

Accepted Answer

Energy loss limits the number of organisms that can be supported at higher trophic levels.

Answer

Energy loss does not affect the number of organisms at higher levels.

Answer

Energy loss causes an equal number of organisms at all levels.

Answer

Energy loss increases the number of organisms at higher levels.

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