Asked by pritam | 7th Dec, 2009, 07:07: PM

Expert Answer:

Chitin is a tough, protective, semitransparent substance, primarily a nitrogen-containing polysaccharide, forming the principal component of arthropod exoskeletons and the cell walls of certain fungi.

Chiton is an animal belongingto phylum Mollusca. It is elongated, bilaterally symmetrical, marine mollusk
 having a mantle covered with eight calcareous plates.

Answered by  | 8th Dec, 2009, 01:33: PM

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