Chapter 9 - Food Chains

Question 1

Define autotroph?

Answer 1

Makes own food

Question 2

What is the order of a food chain? e.g.?

Answer 2

1. producer (e.g. grass)
2. primary consumer (e.g. rabbit)
3. secondary consumer (e.g. cat)
4. apex predator

Question 3

What do arrows in a food chain represent?

Answer 3

Flow of energy. Therefore producer –> primary consumer NOT primary consumer –> producer

Question 4

Where does the energy all go?

Answer 4

1. faeces
2. urine
3. respiration –> heat energy
4. Only small % ends up as biomass or is assimilated into biomass

Question 5

Pyramids of biomass are:

Answer 5

1. symmetrical
2. pencil and ruler to draw
3. labelled trophic levels

Question 6

How do farmers reduce loss of energy

Answer 6

By reducing movement in animals and using warm rooms to prevent loss through shivering