| Assertion : With age, resistance power to diseases is lowered. |
| Reason : With age, there is gradual degeneration of thymus gland. |
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
According to the immunity theory ? The resistance of body decreases with the increase in age. According to one of the theories of ageing, the decline and disappearance of thymus gland by late middle age is the primary cause of ageing.
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