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[A] : The duck-billed platypus and the s...

[A] : The duck-billed platypus and the spiny ant-eater , both are egg-lying animals yet they are grouped under mammals .
[R] : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves .

A

if both are true with reason being correct explanation

B

both true but reason not correct explanation

C

assertion true but reason wrong

D

and both are wrong

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The correct Answer is:
A
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Assertion: The duck-billed platypus and the spiny anteater, both are egg-laying animals yet they are grouped under mammals. Reason: Both of them have seven cervical vertebrae and 12 pairs of cranial nerves.