AIIMS 2017 Botany Development of Endosperm MCQ Question
The sequence of development during the formation of endosperm is
Archesporium -> Megaspore mother cell -- Megaspore — Embryo sac
Archesporium - Megaspore — Megaspore mother cell —→ Embryo sac
Megaspore —→ Archesporium — Megaspore Mother cell — Embryo sac
Megaspore mother cell —→ spore mother cell Embryo spore mother cell Embryo sac
Correct Answer
Detailed Explanation
Option A accurately represents the sequence of development during endosperm formation, starting with the archesporium, which gives rise to the megaspore mother cell. This cell undergoes meiosis to produce four megaspores, of which typically only one survives and develops into the embryo sac. In contrast, options B and C incorrectly sequence the megaspore and megaspore mother cell, while option D misrepresents the terminology and order of development, confusing the roles of spore and mother cells. Understanding this sequence is crucial for comprehending the reproductive processes in angiosperms, where the endosperm provides nourishment to the developing embryo.
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