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Question: Answered & Verified by Expert
The unique mammalian characteristics are:
BiologyAnimal KingdomNEETNEET 2023 (All India)
Options:
  • 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
Solution:
2682 Upvotes Verified Answer
The correct answer is: hairs, pinna and mammary glands

Class: Mammalia:

  • They are homoiothermous.
  • The skin has hairs and glands.
  • External ears or pinnae are present.
  • Respiration is by lungs.
  • Heart is four chambered.
  • They have mammary glands by which the young ones are nourished.
  • Sexes are separate and fertilisation is internal. They show direct development.

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