Question

Differentiate between grazing food chain and detritus food chain. OR Explain Brood parasitism with the help of a suitable example.

Accepted Answer

(a) OR (b) • Brood parasitism is a method of parasitism in which the parasitic bird lays its eggs in the nest of the host bird and let the host bird to incubate them. • Example – The cuckoo bird lays its eggs in the nest of crow, egg of cuckoo bird resembles crows’ egg in size and colour to reduce the chance of host bird detecting and ejecting them from nest Grazing Food Chain Detritus Food Chain 1. It starts with producers. Starts from dead organic matter/ detritus 2. 2nd trophic level is occupied by herbivores. 2nd trophic level is occupied by detritivores. 3. In aquatic ecosystem a major fraction of energy flows through this type of food chain In terrestrial ecosystem much larger fraction of energy flow through such type of food chain.

Differentiate between grazing food chain and detritus food chain.

Marking-scheme solution

More from Ecosystem

(a)OR(b)Differentiate between grazing food chain and detritus food chain.Explain Brood parasitism with the help of a suitable example.

Marking-scheme solution

More from Ecosystem

Differentiate between grazing food chain and detritus food chain.