Food Chain

Question 1

Define a grazing food chain.

Answer 1

A grazing food chain is a sequence of organisms in which each one is eaten by the next member in the chain

Question 2

Give an example of grazing food chain.

Answer 2

Dandelion -> Butterfly -> Thrush -> hawk

Question 3

Define a trophic level.

Answer 3

A trophic level is a feeding stage in a food chain

Question 4

Give an example of a food chain in a grassland habitat,

Answer 4

Buttercup -> Caterpillar -> Blackbird -> Fox

Question 5

Give an example of a food chain in a seashore habitat.

Answer 5

Plankton -> Barnacle -> Whelk -> Crab

Question 6

Define a food web.

Answer 6

A food web consists of two or more interlinked food chains

Question 7

List the two reasons why the number of organisms at each trophic level in a food chain normally decreases as you move up the food chain.

Answer 7

High energy loss at each trophic level

The organisms usually increase in size the further they are along the food chain

Question 8

There is a high energy loss at each trophic level in a food chain, what does this result in.

Answer 8

There is less energy available to the organisms farther along the food chain

Question 9

The organisms usually increase in size the further they are along the food chain, why is this?

Answer 9

This is because organisms tend to feed on organisms that are smaller than themselves

Question 10

Define a pyramid of numbers.

Answer 10

A pyramid of numbers represents the number of organisms at each trophic level (or stage) in a food chain