AIIMS2005Zoology-Animal Classification
AIIMS 2005 Zoology Mammals Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Assertion : The duck-billed Platypus and the spiny ant-eater, 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.
A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true but reason is not the correct explanation of assertion.
C
If assertion is true but reason is false.
D
If both assertion and reason are false.
Correct Answer
Option A
Detailed Explanation
To be a mammal the presence of hair and milk or mammary gland is must, but presence of 7 cervical vertebrae and 12 pairs of cranial nerves are also additional mammalian characteristics.
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