Question

Construct a food chain from the information given below:
a) Roe Deer - fox feeds on roe deer, roe deer feeds on grass
b) Lung Fish – fish feeds on snails, snails feed on plants, crocodile feeds on lung fish.

Answer 1

Answer:

a) roe deer feeds on grass-roe deer-fox feeds on roe deer

b)snails feed on plants-fish feeds on snails-lung fish-crocodile feeds on lung fish

Answer 2

Answer:

• The food chains would be:

a.) grass------- Roe deer -------- Fox.

b.) plants ------- snails ------ fish ----- lung fish ------ crocodile.

Explanation:

• Food chain is the representation of the feeding habit of animals in a given ecosystem.

• It is different from food web because it is linear in its representation and it assumes that animals eat only one type of food. For example, here a fox is assumed to be eating a Roe deer, but in actual ecosystem fox can feed on variety of other animals.

• In food chains, the primary position is for the producers of that ecosystem,that is the autotrophs or green plants

• In a.) grass is the producer, and the Roe deer ( herbivore) and fox ( carnivore) are the primary and secondary consumers respectively.

• In b.) again the plants are the producers, the snail is the primary consumer ( herbivores), fishes eating snail are secondary consumers ( carnivore), lung fish tertiary consumer ( carnivore) and the crocodile is the quaternary consumer, also called Top carnivore in this food chain.