Multiple choice

Which of the following mammalian features is incorrect?

  1. They have four-chambered heart.

  2. They have mammary glands.

  3. Skin has hair and oil glands.

  4. They are exclusively viviparous.

  5. NA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is the correct answer. Most mammals are viviparous as they give birth to the young ones, but some lays eggs as well.

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