All mammals are viviparous, but lower mammals are

Oviparous

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Ovoviviparous

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Placental

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None of the above

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Solution

The correct option is A Oviparous
Oviparity is the condition in which the organisms lay eggs. Monotremes and duck billed platypus is the lower mammal. These mammals lay eggs. They are an exception in the mammals because of their oviparity. Thus, the correct answer is option A.

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Similar questions

A few unique features of mammals are listed here. Pick the incorrect one(s).

I. Body is covered with skin and hair which are thermoregulatory in function.

II. All mammals give birth to a fully developed infant after gestation.

III. Feeds the infant with milk from modified sweat glands.

IV. All mammals are not viviparous.

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