Question

Complete the following analogy with respect to classification of mammals.

Marsupials : (i) : : monotremes : (ii)

Options

• (i) pouched mammals, (ii) placental mammals

• (i) pouched mammals, (ii) egg laying mammals

• (i) placental mammals, (ii) egg laying mammals

• (i) placental mammals, (ii) pouched mammals

Answer 1

Marsupials : pouched mammals : : monotremes : egg laying mammals

Explanation:

• Marsupials (i): These are known as pouched mammals. They give birth to underdeveloped young, which then complete their development inside a maternal pouch (e.g., Kangaroo).
• Monotremes (ii): These are known as egg-laying mammals. They are the most primitive mammals and, unlike others, they lay eggs instead of giving birth to live young (e.g., Platypus, Echidna).