Question

which food chain is advantageous 3 step for 5 step food chain? Why?

Answer 1

Food chains show the feeding relationships in a habitat. Pyramids of biomass are charts that show the mass of living organisms at each step in a food chain. Energy is lost moving up in a food chain, and this limits the length of the chain - so it's more efficient to feed people with plants than with meat.

Organisms usually compete with each other for resources. The populations of predators and prey are interrelated.

Food chains

A food chain shows who eats what in a particular habitat. For example, grass seed is eaten by a vole, which is eaten by a barn owl. The arrows between each item in the chain always point from the food to the feeder. This is the direction in which energy flows in the food chain.

Food chain

Food chains always start with producers, which are almost always green plants. The other organisms in the food chain are consumers – they all get their energy and biomass by consuming (eating) other organisms.

Most food chains are quite short, and they rarely consist of more than four steps. This is because a lot of energy is lost at each step. After about three steps, very little energy is still available for use by living organisms. This also explains why there are few organisms at the top of food chains, compared with those lower down.