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Q55 (UPPCS/2022) Science & Technology › Basic Science (Physics, Chemistry, Biology)

Which of the following mammals lays eggs ?

Result
Your answer: —  ·  Correct: D

Explanation

Mammals are generally classified into three groups based on how they reproduce: monotremes, marsupials, and placental mammals. The Echidna (also known as the spiny anteater) and the Platypus are the only living examples of monotremes, which are unique mammals that lay eggs instead of giving birth to live young. After the eggs hatch, the young are nourished with milk secreted from mammary gland patches, as monotremes lack nipples.

  • Loris and Hedgehogs are placental mammals that give birth to fully developed live young.
  • Kangaroos are marsupials; they give birth to very underdeveloped live young that continue their development inside the mother's pouch.
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