Differentiate between grazing food chain and detritus food chain.  

 

Grazing food chain

1.depicted as grass —goat — man

 

 2.Begins with producers / autotrophs.

All animals depend on plants for their food needs. Thus they are called consumers / heterotrophs.

 3.major conduit of energy flow in an aquatic ecosystem.

4. . Producer (plants) ——–primary consumer ( that feed on plants) —— secondary consumer ( animals that eat other animals)  —— tertiary consumer ———- quarternary consumers.

5. no:of trophic levels will be more.

 

 

 

 

Detritus food chain

1.Depicted as, Dead decaying organic matter —- bacteria / fungus.

  2.     Begins with dead organic matter.

Includes decomposers / saprotrophs.which are heterotrophic organisms .

3. Major conduit of energy flow in a terrestrial ecosystem.

4.Decomposers meet their energy needs by degrading dead organic matter / detritus –  (saprotrophs)

 

5.number of trophic levels will be restricted.