AIIMS 2019 Botany Senescence Assertion Reason Question
Assertion: Senescence is the time when the age associated defects are manifested.
Reason: Certain genes may be undergoing sequential switching on and off during one’s life.
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
Option A is correct because both the assertion and reason are true: senescence indeed refers to the period when age-associated defects become apparent, and the sequential activation and deactivation of certain genes throughout an individual's life can contribute to these defects. Option B is incorrect because the reason does explain the assertion by highlighting the role of gene regulation in aging. Options C and D are incorrect since they assert that either the assertion or reason is false, which contradicts the established understanding of senescence and gene expression in aging processes.
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