Page No. Date What is Cocoon 2 How is it produce​

Cocoon, a case produced in the larval stage of certain animals (e.g., butterflies, moths, leeches, earthworms, Turbellaria) for the resting pupal stage (see pupa) in the life cycle. Certain spiders spin a fibrous mass, or cocoon, to cover their eggs.

answer; ///(b) it is composed of four protein chains and four heme groups;

the backbone of the dna and rna compound is sugar phosphate.