Question

how is grazing food chain connected with detritus food chain?

Answer 1

Grazing food chain

 

Detritus food chain

1.

In this food chain, energy is derived from the Sun.

1.

In this food chain, energy comes from organic matter (or detritus) generated in trophic levels of the grazing food chain.

2.

It begins with producers, present at the first trophic level. The plant biomass is then eaten by herbivores, which in turn are consumed by a variety of carnivores.

2.

It begins with detritus such as dead bodies of animals or fallen leaves, which are then eaten by decomposers or detritivores. These detritivores are in turn consumed by their predators.

3.

This food chain is usually large.

3.

It is usually smaller as compared to the grazing food chain.

Answer 2

Grazing Food Chain which can be abbreviated as GFC has its primary energy source as Photosynthesis. Here, in the Detritus food chain (DFC)  has its primary source of energy as dead organic matter like plants, leaves, animals.  

The primary consumers of Detritus Food Chain are Protozoans, bacteria, fungi and other microorganisms. Here the first energy transfers to detritivores from decaying materials.

In GFC the first energy source is transferred from plants to herbivores and then to carnivores.