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NEET2023BotanyAnimal KingdomActual

The unique mammalian characteristics are:

Options

  1. Apinna, monocondylic skull and mammary glands
  2. Bhairs, tympanic membrane and mammary glands
  3. Chairs, pinna and mammary glands
  4. Dhairs, pinna and indirect development

Correct answer

C. hairs, pinna and mammary glands

Step-by-step solution

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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