4.5

4.5 Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer

Food Chain

ü  Food chain links the producer to the primary consumer and so on.

ü  One organism is shown at each trophic level.

ü  In a food chain, you cannot show an omnivore or feeding at more than 2 trophic levels.

ü  Food chains show the flow of matter and energy.

Food Web

1) Organisms can have multiple predators

2) Organisms may feed on multiple preys.

3) They are linked.