Energy Flow Through Ecosystems Quiz

1.

An energy pyramid is used to show _________.

A.

The layout of organisms in any order seen fit
B.

The amount of energy in the universe
C.

The amount of energy at each trophic level
D.

None of the above

Correct Answer
C. The amount of energy at each trophic level

Explanation
An energy pyramid is used to show the amount of energy at each trophic level. It represents the flow of energy through different levels of a food chain or food web. The pyramid shape represents the decreasing amount of energy available as it moves up the trophic levels, with the producers at the base having the most energy and the top consumers having the least. This visual representation helps to illustrate the energy transfer and efficiency between different organisms in an ecosystem.

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13

2.

The sun is the source of energy on earth.

A.

True
B.

False

Correct Answer
A. True

Explanation
The sun is indeed the source of energy on earth. It emits vast amounts of electromagnetic radiation, including sunlight, which provides heat and light energy to sustain life on our planet. This energy is harnessed by plants through photosynthesis to produce food, and it also drives weather patterns, ocean currents, and the water cycle. Additionally, solar energy is used by humans through solar panels to generate electricity. Therefore, it is accurate to say that the sun is the source of energy on earth.

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10

3.

Which number on the diagram below shows the location of the secondary consumers?

A.

3
B.

2
C.

1
D.

4

Correct Answer
A. 3

Explanation
Number 3 on the diagram shows the location of the secondary consumers. Secondary consumers are organisms that eat primary consumers, which are shown as number 2 on the diagram. Therefore, number 3 represents the location of organisms that consume the primary consumers, making them the secondary consumers.

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21

4.

In an energy pyramid, which way does energy transfer?

A.

From the top of the pyramid to the bottom
B.

From the bottom of the pyramid to the top
C.

None of these
D.

Both of these

Correct Answer
B. From the bottom of the pyramid to the top

Explanation
In an energy pyramid, energy transfers from the bottom to the top. This is because the primary producers, such as plants, capture energy from the sun through photosynthesis and convert it into chemical energy. This energy is then transferred to the primary consumers, such as herbivores, when they consume the plants. The energy continues to transfer up the pyramid as it is consumed by secondary consumers, such as carnivores, and so on. Therefore, the energy flow in an energy pyramid is unidirectional, moving from the bottom to the top.

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4

5.

Look at the following energy pyramid. If the producers have 7000 kcal of energy, how much energy will be available for the Sheephead ? fish?

A.

7 kcal
B.

70 kcal
C.

700 kcal
D.

7000 kcal

Correct Answer
B. 70 kcal

Explanation
The energy pyramid shows the flow of energy in an ecosystem, with producers at the bottom and consumers at higher levels. Each level of the pyramid represents a trophic level, and energy is transferred from one level to the next. In this case, if the producers have 7000 kcal of energy, the energy available for the Sheephead, which is a consumer at a higher trophic level, would be less than the energy available for the producers. Therefore, the correct answer is 70 kcal, as it represents a lower amount of energy available for the Sheephead compared to the producers.

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7

6.

Giant Sea Bass do not get as much energy from eating the same amount of food as sea urchin. Which statement best describes the reason.

A.

Sea urchins move around less than sea bass
B.

Sea urchins live on less energy that bass
C.

Sea urchins are bigger than sea bass
D.

Sea urchin use much of their energy for life processes

Correct Answer
B. Sea urchins live on less energy that bass

Explanation
Sea urchins live on less energy than bass.

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3

7.

Which level of this food pyramid represents the largest amount of organisms?

A.

Tertiary consumers
B.

Secondary consumers
C.

Primary consumers
D.

Producers

Correct Answer
D. Producers

Explanation
Producers, such as plants, represent the largest amount of organisms in the food pyramid. They are capable of converting sunlight into energy through photosynthesis, which makes them the primary source of energy for all other organisms in the ecosystem. As a result, there are typically more producers than any other level in the food pyramid.

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8.

Which of these best describes the relationship shown by this Kelp Forest Ecosystem pyramid?

A.

The Giant Sea Bass is a predator of the Sheephead
B.

The Giant Sea Bass is the prey of the Sheephead
C.

Sea Urchins are the prey of the Kelp.
D.

Sheepheads are the predator of the Giant Sea Bass

Correct Answer
A. The Giant Sea Bass is a predator of the Sheephead

Explanation
The pyramid illustrates the flow of energy in a kelp forest ecosystem, with different species occupying different trophic levels. Here's a breakdown of the levels:
Level 1 (Producers): Kelp
Level 2 (Primary Consumers): Sea Urchin (herbivores that feed on kelp)
Level 3 (Secondary Consumers): Sheephead (predators that feed on sea urchins)
Level 4 (Tertiary Consumers): Giant Sea Bass (top predator that feeds on sheephead)
From this, the best description of the relationship shown is:
"The Giant Sea Bass is a predator of the Sheephead."
This correctly reflects the trophic interaction where the giant sea bass is a higher-level predator feeding on the sheephead.

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9

9.

If birds eat insects that feed on corn, which pyramid level would birds occupy?

A.

A
B.

B
C.

C
D.

D

Correct Answer
B. B

Explanation
Birds would occupy pyramid level B. In a food pyramid, each level represents a different trophic level or feeding level. Birds are secondary consumers, meaning they eat primary consumers. In this scenario, the insects that feed on corn would be the primary consumers, and the birds that eat those insects would be the secondary consumers. Therefore, birds would occupy pyramid level B.

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10.

As one progresses from level D to level A in this pyramid, what happens to the amount of stored energy?

A.

Increases
B.

Decreases
C.

Remains the same
D.

None of the above

Correct Answer
B. Decreases

Explanation
As one progresses from level D to level A in the pyramid, the amount of stored energy decreases. This is because energy is lost as it moves up the trophic levels. At each level, organisms use some of the energy for their own metabolism and activities, and the rest is lost as heat. Therefore, as energy flows through the food chain, there is less and less energy available at higher trophic levels, resulting in a decrease in the amount of stored energy.

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15

Energy Flow Through EcoSystems Quiz

An energy pyramid is used to show _________.

The sun is the source of energy on earth.

Which number on the diagram below shows the location of the secondary consumers?

In an energy pyramid, which way does energy transfer?

Look at the following energy pyramid. If the producers have 7000 kcal of energy, how much energy will be available for the Sheephead ? fish?

Giant Sea Bass do not get as much energy from eating the same amount of food as sea urchin. Which statement best describes the reason.

Which level of this food pyramid represents the largest amount of organisms?

Which of these best describes the relationship shown by this Kelp Forest Ecosystem pyramid?

If birds eat insects that feed on corn, which pyramid level would birds occupy?

As one progresses from level D to level A in this pyramid, what happens to the amount of stored energy?