NEET · Biology · STD 11 - 4. Animal kingdom
The unique mammalian characteristics are:
- A pinna, monocondylic skull and mammary glands
- B hairs, tympanic membrane and mammary glands
- C hairs, pinna and mammary glands
- D hairs, pinna and indirect development
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.
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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