Energy Flow in Ecosystems

Question 1

Which kind of organism is an autotroph?

Revolt · Accepted Answer

producer

Question 2

Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?

Revolt · Accepted Answer

Energy is lost at each trophic level.

Question 3

Which organism is a primary consumer in the food web below?

Revolt · Accepted Answer

herbivorous duck

Question 4

In the food chain below, which is the producer?grass mouse snake hawk

Revolt · Accepted Answer

grass

Question 5

What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?

Revolt · Accepted Answer

The entire food web would be affected.

Question 6

A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?

Revolt · Accepted Answer

food web

Question 7

Which organisms are heterotrophs?

Revolt · Accepted Answer

consumers

Question 8

From the producer level to which level does energy flow directly?

Revolt · Accepted Answer

primary consumer

Question 9

Why are mushrooms important to the food chain?

Revolt · Accepted Answer

They recycle nutrients into the ecosystem.

Question 10

What is shown in the image below?

Revolt · Accepted Answer

food web

Energy Flow in Ecosystems Answers

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