Why are whales and dolphins classified as mammals even though they live in water and look fish-like?

Type: MCQ • Marks: 1

A. They breathe air via lungs, give birth to live young, and feed babies with milk

B. They have scales

C. They have gills

D. They lay eggs

Explanation

Cetaceans possess all fundamental mammalian traits: pulmonary breathing, viviparity, and lactation.

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Class 9th Science (MCQ)

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