AIIMS 2005 Zoology Mammals Assertion Reason Question
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.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
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.
Found an issue with this question?
Related Questions
More from 2005
AIDS is caused by HIV that principally infects:
Assertion : The logic gate NOT can be built using diode. Reason : The output voltage and the input voltage of the diode have 180° phase difference.
In a semiconducting material the mobilities of electrons and holes are μₑ and μₕ, respectively. Which of the following is true?