Question

Which of the following is an egg-laying mammal?

• A. Kangaroo
• B. Whale
• C. Bat
• D. Platypus

Answer 1

Solution

The correct option is D) Platypus

Explanation

The term mammal is derived from the Latin word 'mammae', meaning breast. They possess mammary glands which produce milk to feed their young ones. Most mammals are viviparous, i.e., they give birth to young ones. ∙ Some mammals that possess mammary glands for feeding young ones are oviparous, i.e., they lay eggs. Platypus and spiny anteaters are examples of oviparous mammals.

Characteristics of mammals

1. Mammals are warm-blooded animals who give birth to their younger ones.

2. They are the most dominant form of animals found in almost all types of habitats.

3. They have mammary glands that help them produce milk to feed their younger ones

4. Presence of a region of the brain known as the Neocortex

5. Their skin possesses oil glands (sebaceous glands) and sweat glands (sudoriferous glands).

6. The fur of hair throughout the body helps animals adapt to their environment.

7. They are heterodont, i.e., possess different types of teeth.

8. Mammals also possess cervical vertebrae.

Related questions

1. Write down four characters of mammals. Give two examples.
2. The animals that lay eggs are called___.