UNIT THREE: Food Chains

Question 1

What do the arrows shows in a food chain?

Answer 1

The energy flow

Question 2

How much energy is passed on as each stage?

Answer 2

10%

Question 3

How much energy is lost?
And how is it lost?

Answer 3

90%
Lost from movement, respiration and undigested parts

Question 4

What is grass in a food chain?

Answer 4

Producer

Question 5

How to describe the role of a caterpillar in a food chain?

Answer 5

Primary consumer
Prey to those higher up in the food chain
Herbivore

Question 6

How to describe the role of a bird in a food chain?

Answer 6

Secondary consumer
Predator to those lower in the food chain but prey to those higher
Omnivore

Question 7

How to describe the role of a eagle in a food chain?

Answer 7

Predator as its at the top of the food chain
Tertiary consumer
Carnivore

Question 8

What is the Pyramid of numbers

Answer 8

A graph, not always a pyramid shape, that shows the numbers of animals in a food chain.

eg, grass–> Rabbit–> Fox

There is a lot of grass, few rabbit and even fewer foxes

Question 9

Pyramid of Biomass/energy