Question

Select the wrong statement from the given.

• A. Monotremes are present in Australia and New Guinea
• B. Marsupials are endemic to Australia and America
• C. Marsupials give birth to underdeveloped babies
• D. Placental mammals show restricted distribution

Answer 1

The correct option is D Placental mammals show restricted distribution

Mammals are a group of vertebrates characterised by the presence of mammary glands. They are of three subclasses - monotremes (egg-laying), marsupials and placentals.


Monotremes are the egg-laying mammals like echidna, duck-billed platypus. Their geographical distribution is restricted to Australia and New Guinea.

Marsupials possess a pouch called marsupium to carry and nurture the babies. They give birth to underdeveloped babies which will climb to the pouch and get nurtured by the mother. Marsupials also show restricted distribution; they are endemic (restricted to a place) to Australia and America. Examples include kangaroo and numbat.

Placental mammals are those which possess placenta that connects the baby with the mother. Placenta helps in the transportation of nutrients and waste materials. Placental mammals show a wide range of distribution (not restricted distribution). Examples include humans and dogs.