AIIMS 2018 Botany Endosperm Formation Assertion Reason Question
Assertion: The endosperm in gymnosperm is formed after fertilization. Reason: The endosperm of gymnosperm is formed by triple fusion.
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
The assertion is false because in gymnosperms, the endosperm is formed before fertilization, as it develops from the haploid megasporangium tissue, not after. The reason is also false because endosperm formation in gymnosperms does not involve triple fusion, which is a process that occurs in angiosperms where two sperm nuclei fuse with one egg cell and another polar nucleus to form the triploid endosperm. Thus, both statements are incorrect, validating option D. Other options are incorrect as they assume at least one of the statements is true or that the reason correctly explains the assertion, which is not the case here.
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