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Question

Which of the following animals does not have placenta?

A
Bat
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B
Platypus
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C
Kangaroo
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D
Whale
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Solution

The correct option is D Platypus
Platypus, also known as the duck-billed platypus is a semi-aquatic egg-laying primitive mammal. They are devoid of the placenta and thus lay eggs. They are found only in the Australian region due to geographical isolation.
Hence, option B is correct.

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