question_answer

Arun visited his grandfather's farm and noticed that one of the workers was introducing earthworms in the soil. He quickly rushed to his grandfather and asked him the reason. His grandfather explained him the advantages of earthworm in soil improvement as it helps in decomposition of complex organic matter.

(i) Why are earthworms also known detritivores?

(ii) Explain fragmentation.

(iii) Name the steps in the process of decomposition.

(iv) What values are shown by Arun?

Answer:

(i)   Earthworms are known as detritivores as they breakdown dead remains of plants and animlas into smaller particles.

(ii)  Fragmentation is the first step in the process of decomposition in which detritivores (e.g.; earthworm) breakdown detritus in smaller particles.

(iii) Other than fragmentation steps involved in decomposition are, leaching, catabolism, humificaiton and mineralisation.

(iv) Arun is very alert, curious and had scientific attitude.