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Nails, hoofs and horns are formed by

A. cuticle

B. keratin

C. chitin

D. none of these

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  1. The sebaceous glands of skin are as- I sociated with the
  2. The skin of frog is attached to the under lying body muscles loosely leaving many
  3. A type of skin gland which is well developed and functional in females, but non-functional and vestigeal…
  4. Modified sebaceous glands around eyes in rabbit are
  5. Structures present in the skin of frog and absent in skin of rabbit are
  6. The corium of dermis is a derivative of
  7. The cells of the stratum lucidum of the skin become hard and the horny layer of cells thus formed become
  8. Ceruminous or wase glands are seen in
  9. The part of the hair, in which the hair I shaft is lodged, is called as
  10. Sweat glands are confined to external ears in
  11. Large sweat glands are characteristic of >
  12. Prevention of evaporation of water from the skin surface in humans is due to
  13. The skin functions as a storage organ because the deeper layers of dermis store
  14. Mammary glands are modified......in mammals
  15. Hair originates from
  16. Mammals lack mucous glands in the skin because
  17. In the mammalian skin, the adipose tissue is found
  18. Colouration of frog is due to
  19. If a cat is deprived of vibrissae, stiff long hair on the snout
  20. The integument of rabbit differs from that of frog in
  21. Lacrymal glands are responsible for the secretion of
  22. Wrinkling of skin in old age is due to
  23. The layer of cells in the skin which is periodically cast off is
  24. The keratin of the integument is
  25. In the skin collagen and elastic fibres are abundant in the
  26. Perspiration is a process, essentially meant for
  27. Sebaceous glands are present in
  28. The modification of the skin at the terminal part of the dorsal surface of phalanges result in formation…
  29. Glands of Zeis are associated with the eye lashes. These are modified
  30. Nails, hoofs and horns are formed by