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NEET
Exam
NEET
Subject
Zoology
Chapter
Evolution

NEET · Zoology · Evolution

Why did pouched mammals of Australia survive according to the...

Why did pouched mammals of Australia survive according to the paragraph?

Options

  1. AThey evolved faster than other mammals
  2. BThey migrated to other continents
  3. CThere was a lack of competition from other mammals due to continental drift
  4. DThey were more intelligent than other mammals

Correct answer

C. There was a lack of competition from other mammals due to continental drift

Step-by-step solution

The first mammals were like shrews. Their fossils are small sized. Mammals were viviparous and protected their unborn young inside the mother’s body. Mammals were more intelligent in sensing and avoiding danger at least. When reptiles came down mammals took over this earth. There were in South America mammals resembling horse, hippopotamus, bear, rabbit, etc. Due to continental drift, when South America joined North America, these animals were overridden by North American fauna. Due to the same continental drift pouched mammals of Australia survived because of lack of competition from any other mammal.

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