Nails, hoofs and horns are formed by

A. cuticle

B. keratin

C. chitin

D. none of these

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  1. Perspiration is a process, essentially meant for
  2. Colour in skin of frog is due to
  3. Sebaceous glands are found in
  4. Parotid glands are
  5. Prevention of evaporation of water from the skin surface in humans is due to
  6. Malpighian layer of the skin is a part of
  7. The sebaceous glands of skin are as- I sociated with the
  8. Leather from the mammalian skin is derived from
  9. A type of skin gland which is well developed and functional in females, but non-functional and vestigeal…
  10. Large sweat glands are characteristic of >
  11. The skin functions as a storage organ because the deeper layers of dermis store
  12. In frog, the mucous and poisonous glands are found in
  13. The integument of rabbit differs from that of frog in
  14. Sebaceous glands are present in
  15. Mammals lack mucous glands in the skin because
  16. The cells of the stratum lucidum of the skin become hard and the horny layer of cells thus formed become
  17. The sweat glands in hares and rabbits are seen in
  18. In the skin collagen and elastic fibres are abundant in the
  19. Glands of Zeis are associated with the eye lashes. These are modified
  20. Nails, hoofs and horns are formed by
  21. Sweat glands are confined to external ears in
  22. If a cat is deprived of vibrissae, stiff long hair on the snout
  23. The modification of the skin at the terminal part of the dorsal surface of phalanges result in formation…
  24. The skin in man is thickest at
  25. Scales in sharks are
  26. Lacrymal glands are responsible for the secretion of
  27. The layer of cells in the skin which is periodically cast off is
  28. Wrinkling of skin in old age is due to
  29. In the mammalian skin, the adipose tissue is found
  30. The sudoriferous glands of the skin secrete