Question

Human beings are mammals. So are cows and bats. Which of the following is a typical characteristic of mammals?

• A. They have hair
• B. They give birth to young ones
• C. They suckle their young ones
• D. All of these

Answer 1

The correct option is D

All of these

The correct option is D.

Explanation of the correct option:

1. The typical characteristics of a mammal are that they give birth to their young ones.
2. They are warm-blooded animals.
3. They have sweat glands and also produce hair to maintain their body temperature.
4. They are born alive.
5. The neonatal infant is fed by the mother's milk.
6. Hence, their mammary glands suckle their young ones.
7. They have ears and a four-chambered heart.
8. They also have a diaphragm to separate the heart from the lungs.

Final answer: The typical characteristics of mammals are, that they have hair, they give birth to young ones and they suckle their young ones.