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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 cells of the stratum lucidum of the skin become hard and the horny layer of cells thus formed become
  2. Scales in sharks are
  3. The hair of a mammal is a structure which is
  4. The integument of rabbit differs from that of frog in
  5. Modified sebaceous glands around eyes in rabbit are
  6. Lacrymal glands are responsible for the secretion of
  7. If a cat is deprived of vibrissae, stiff long hair on the snout
  8. In the skin collagen and elastic fibres are abundant in the
  9. Hair originates from
  10. Mammary glands are modified......in mammals
  11. Sweat glands in mammals are primarily concerned with
  12. The skin in man is thickest at
  13. Prevention of evaporation of water from the skin surface in humans is due to
  14. Mammals lack mucous glands in the skin because
  15. In frog, the mucous and poisonous glands are found in
  16. Glands of Zeis are associated with the eye lashes. These are modified
  17. Colouration of frog is due to
  18. Skin of frog is characterized by the ab- I sence of
  19. The skin functions as a storage organ because the deeper layers of dermis store
  20. The function of sebaceous glands in mammals is to
  21. The part of the hair, in which the hair I shaft is lodged, is called as
  22. A type of skin gland which is well developed and functional in females, but non-functional and vestigeal…
  23. Sweat glands are confined to external ears in
  24. Colour in skin of frog is due to
  25. Sebaceous glands are found in
  26. Wrinkling of skin in old age is due to
  27. The corium of dermis is a derivative of
  28. Large sweat glands are characteristic of >
  29. The mucous and poisonous glands are found is the skin of frog. These are specially abundant
  30. In the mammalian skin, the adipose tissue is found