Question

What is the most important feature that distinguish mammals?

• A. Production of Milk
• B. Giving birth to young ones directly
• C. Internal gestation
• D. All of the above

Answer 1

The correct option is A

Production of Milk

Some mammals like Platypus and Echidna lay eggs. But other mammals give birth to young ones. These young ones are fed by the milk of the mother. Therefore female mammals produce milk.