Energy Flow In EcoSystems Review Quiz
Explore the fundamentals of energy dynamics in ecosystems with this quiz. Understand the roles of the sun, kelp, sea urchins, and other organisms in energy transfer. Assess your grasp on energy efficiency among trophic levels, particularly how energy is conserved and lost in ecological interactions.
- 1.
Where does all the energy in an ecosystem come from?
- A.
The sun
- B.
The wind
- C.
Producers
- D.
Tertiary Consumers
Correct Answer
A. The sunExplanation
All the energy on Earth comes from the sun.Rate this question:
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- 2.
What is the producer in this ecosystem?
- A.
Kelp
- B.
Sea Urchin
- C.
Sheephead
- D.
Giant Sea Bass
Correct Answer
A. KelpExplanation
Producers, who make their own energy through photosynthesis, are always the bottom level of an energy pyramid.Rate this question:
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- 3.
What is the primary consumer in this ecosystem?
- A.
Kelp
- B.
Sea Urchin
- C.
Sheephead
- D.
Giant Sea Bass
Correct Answer
B. Sea UrchinExplanation
Primary consumers are always the 2nd level of the energy pyramid. They get their energy from the producers.Rate this question:
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- 4.
What organism has the most energy in the ecosystem?
- A.
Kelp
- B.
Sea Urchin
- C.
Sheephead
- D.
Giant Sea Bass
Correct Answer
A. KelpExplanation
Producers, who make their own energy through photosynthesis, have the most energy. Energy is lost to heat as it moves up the energy pyramid.Rate this question:
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- 5.
What organism has the least energy in the ecosystem?
- A.
Kelp
- B.
Sea Urchin
- C.
Sheephead
- D.
Giant Sea Bass
Correct Answer
D. Giant Sea BassExplanation
Energy is lost to heat as you move up the energy pyramid, so the top level (in this case the tertiary consumers) always have the least energy in the ecosystem.Rate this question:
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- 6.
How much energy consumed by the rabbit gets passed on to the snake, when it eats the rabbit?
- A.
0.1%
- B.
1%
- C.
10%
- D.
100%
Correct Answer
C. 10%Explanation
The 10% rule in energy flow states that only 10% of an organisms energy gets passed on when it gets consumed (eaten).Rate this question:
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- 7.
What organism(s) in this ecosystem perform cellular respiration to make ATP?
- A.
Kelp only
- B.
Sea Urchin, Sheephead, and Giant Sea Bass only
- C.
Kelp and Sea Urchin only
- D.
Kelp, Sea Urchin, Sheephead, and Giant Sea Bass
Correct Answer
D. Kelp, Sea Urchin, Sheephead, and Giant Sea BassExplanation
All organisms (plants and animals) must use cellular respiration to turn glucose into ATP. So all organisms in this ecosystem (plants and animals) use cellular respiration.Rate this question:
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- 8.
What organism(s) in this ecosystem perform photosynthesis to make glucose?
- A.
Kelp only
- B.
Sea Urchin, Sheephead, and Giant Sea Bass only
- C.
Kelp and Sea Urchin only
- D.
Kelp, Sea Urchin, Sheephead, and Giant Sea Bass
Correct Answer
A. Kelp onlyExplanation
Producers (usually plants) are the only organisms that can produce their own glucose through photosynthesis.Rate this question:
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- 9.
Which organisms get their energy directly from the sun?
- A.
Grass
- B.
Rabbits
- C.
Snakes
- D.
Hawks
Correct Answer
A. GrassExplanation
Producers get their energy directly from the sun through photosynthesis. Consumers get their energy indirectly from the sun, when they eat producers.Rate this question:
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- 10.
The amount of energy ______________ as you move through an energy pyramid.
- A.
Increases
- B.
Decreases
- C.
Fluctuates
- D.
Remains the same
Correct Answer
B. DecreasesExplanation
Producers (at the bottom) get the most energy directly from the sun through photosynthesis. Then as you move up each step in the pyramid, 90% of energy gets lost at each step.Rate this question:
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- 11.
Which organism receives the most energy from the producers?
- A.
Rabbits
- B.
Snakes
- C.
Hawks
Correct Answer
A. RabbitsExplanation
Since the rabbits (the primary consumers) eat the producers directly, they get the most energy from them.Rate this question:
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- 12.
Why is a pyramid shape used to represent the energy flow in an ecosystem?
- A.
The amount of energy decreases as you move up the pyramid.
- B.
The size of the organisms decreases as you move up the pyramid.
- C.
The amount of energy increases as you move up the pyramid.
- D.
The number of organisms increases as you move up the pyramid.
Correct Answer
A. The amount of energy decreases as you move up the pyramid.Explanation
The amount of energy decreases as you move up the pyramid, just like the size of the pyramid decreases as you move up pyramid.Rate this question:
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- 13.
What happened to 90% of the rabbits' energy that did not get passed on when the snakes ate it?
- A.
It was transferred to the grass.
- B.
It disappeared when the rabbit dies.
- C.
It was lost to heat as the rabbit used the energy when it was alive.
- D.
It returns to the sun.
Correct Answer
C. It was lost to heat as the rabbit used the energy when it was alive.Explanation
Most of the energy (90%) that an organism gets from its food is used by the organism and lost to heat.Rate this question:
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- 14.
_____________ produce their own glucose through photosynthesis, while _____________ get their glucose from eating other organisms.
- A.
Consumers, Producers
- B.
Producers, Consumers
- C.
Herbivores, Carnivores
- D.
Carnivores, Herbivores
Correct Answer
B. Producers, ConsumersExplanation
Producers, such as plants, make glucose from sunlight using photosynthesis. Consumers cannot use make glucose from sunlight (because they do not have chloroplasts), so they must eat other organisms to get glucose.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Nov 16, 2015Quiz Created by
Haley Hart
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