Nails, hoofs and horns are formed by

A. cuticle

B. keratin

C. chitin

D. none of these

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  1. The skin of frog is attached to the under lying body muscles loosely leaving many
  2. In the mammalian skin, the adipose tissue is found
  3. The keratin of the integument is
  4. Modified sebaceous glands around eyes in rabbit are
  5. Prevention of evaporation of water from the skin surface in humans is due to
  6. Colour in skin of frog is due to
  7. In frog, the mucous and poisonous glands are found in
  8. Ceruminous or wase glands are seen in
  9. Nails, hoofs and horns are formed by
  10. In the skin collagen and elastic fibres are abundant in the
  11. The cells of the stratum lucidum of the skin become hard and the horny layer of cells thus formed become
  12. The layer of cells in the skin which is periodically cast off is
  13. Sweat glands are confined to external ears in
  14. The skin functions as a storage organ because the deeper layers of dermis store
  15. Leather from the mammalian skin is derived from
  16. Wrinkling of skin in old age is due to
  17. Sweat glands in mammals are primarily concerned with
  18. The part of the hair, in which the hair I shaft is lodged, is called as
  19. The mucous and poisonous glands are found is the skin of frog. These are specially abundant
  20. Mammals lack mucous glands in the skin because
  21. Scales in sharks are
  22. Glands of Zeis are associated with the eye lashes. These are modified
  23. Sebaceous glands are found in
  24. The sudoriferous glands of the skin secrete
  25. Hair originates from
  26. The integument of rabbit differs from that of frog in
  27. Large sweat glands are characteristic of >
  28. The sweat glands in hares and rabbits are seen in
  29. The function of sebaceous glands in mammals is to
  30. Structures present in the skin of frog and absent in skin of rabbit are