Question

Assertion : The exoskeleton of arthropods is made up of complex polysaccharide called chitin.
Reason : Plant cell walls are made of cellulose.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

Polysaccharides are complex carbohydrates which are formed by polymerisation of large number of monosaccharide monomers. Exoskeletons of arthropods, contain a complex polysaccharide called chitin. These complex polysaccharides are heteropolymers. Plant cell walls are made up of cellulose. Paper made from plant pulp and cotton fibre is cellulosic. Cellulose is homopolysaccharide.