AIIMS 2017 Botany Seed Development Assertion Reason Question
Read the Assertion and Reason carefully to mark the correct option from those given below Assertion Endosperm is formed by the fusion of one male gamete and two polar nuclei. Reason In pea, the endosperm remains the part of seed as it is not completely used up during embryo development.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false
Both Assertion and Reason are false
Correct Answer
Detailed Explanation
Option A is correct because the assertion accurately describes the formation of endosperm through the fusion of one male gamete with two polar nuclei, a process known as triple fusion, which results in a triploid endosperm (3n). The reason is also true, as in pea plants (Pisum sativum), the endosperm is retained in the seed and provides nourishment to the developing embryo, thus supporting the assertion.
Option B is incorrect because while both statements are true, the reason does indeed explain the assertion. Option C is incorrect since both the assertion and reason are true. Option D is incorrect as both statements are factual and relevant to the process of seed development in angiosperms.
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