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NEET · Biology · STD 11 - 4. Animal kingdom

The unique mammalian characteristics are:

  1. A pinna, monocondylic skull and mammary glands
  2. B hairs, tympanic membrane and mammary glands
  3. C hairs, pinna and mammary glands
  4. D hairs, pinna and indirect development
Verified Solution

Answer & Solution

Correct Answer

(C) hairs, pinna and mammary glands

Step-by-step Solution

Detailed explanation

Option (3) is correct answer because presence of hairs, pinna and mammary glands are unique features of mammals.
Options (2), (3) and (4) are not correct because, monocondylic skull is present in reptiles and aves whereas mammals have dicondylic skull. Tympanic membrane is present in amphibians also, so it is not considered as unique feature.
Indirect development is not seen in mammals.
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