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Feathers and hair consist mainly of ___ . a. chitin b. cartilage c. keratin d. collagen
Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
Feathers and hair consist mainly of ___ .
- a. chitin
- b. cartilage
- c. keratin
- d. collagen
Concept introduction: The birds in order to avoid completion on land, they evolved the volant adaptation. To suit the volant adaptation they developed wings which are made of feathers and this helps the birds to fly. The hair and fur of mammals cover the epidermis and insulate the internal anatomy from harsh outside cold environment. Both the hair and feather are made of a protein called as keratin.
Explanation of Solution
Reason for the correct answer:
Keratin is a waterproof and study protein that constitutes the feathers of birds and the hairs of mammals. Feathers are the structures derived from scales and are made of keratin. The hairs are derived from the epidermis and are made of keratin.
Option c. is given as “keratin” and since the feather of birds and hairs of mammals are made of keratin, the correct answer is option c.
Reason for the incorrect answer:
Option a. is given as, “chitin”. The cell wall of fungi and exoskeleton of arthropods are made of chitin...
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