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30/08/2020 7:46 pm
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Which are exclusively viviparous?
(a) Bony fishes
(b) Cartilagenous fishes
(c) Sharks
(d) Whales
1 Answer
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30/08/2020 7:47 pm
(d) Whales
Explanation:
Whales are exclusively viviparous. In viviparous animals (majority of mammals including human beings), the zygote develops into a young one inside the body of the female organism. After attaining a certain stage of growth, the young ones are delivered out of the body of the female organism.