Food Chains and Energy Pyramids Quiz

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Questions and Answers

What percentage of energy is transferred from one trophic level to the next?

90%
25%
50%
10% (correct)

Producers, like grass, are at the highest trophic level in an ecological pyramid.

False (B)

Name one example of a primary consumer in a food chain.

grasshopper

In a food chain, the ______ is the organism that produces energy through photosynthesis.

<p>producer</p> Signup and view all the answers

Match the following organisms to their respective trophic levels:

<p>Grass = 1st trophic level (producer) Grasshopper = 2nd trophic level (primary consumer) Rat = 3rd trophic level (secondary consumer) Wolf = Top consumer</p> Signup and view all the answers

Flashcards

Food Chain

The transfer of energy between organisms in an ecosystem, where each organism consumes another, creating a chain of energy flow.

Ecological Pyramid

A diagram that shows the amount of energy at each trophic level in an ecosystem, usually shaped like a pyramid.

Trophic Level

The position an organism occupies in a food chain based on its feeding source.

Producers (autotrophs)

Organisms that make their own food, usually through photosynthesis.

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Primary Consumers (herbivores)

Organisms that eat producers, making them the first level of consumers in a food chain.

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Study Notes

Food Chains and Energy Pyramids

Feeding relationships follow multiple food chains.
Arrows in food chains should point in the correct direction.
Ecological energy pyramids show energy transfer between trophic levels.
Only about 10% of the energy from one trophic level transfers to the next.
The remaining 90% of energy is lost as heat.
Each trophic level can support fewer organisms compared to the level below.
The trophic level depends on the number of steps from the producer.
The first trophic level consists of autotrophs (e.g., grass).
The second trophic level consists of primary consumers (e.g., grasshoppers).
Higher trophic levels include secondary and tertiary consumers (e.g., snakes, eagles).