Q.

 Megaspores are produced from the megaspore mother cells after

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a

 mitotic division

b

formation of thick wall

c

differentiation

d

meiotic division

answer is D.

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Detailed Solution

The process of formation of megaspores from the megaspore mother cell is called megasporogenesis. Ovules generally differentiate a single megaspore mother cell (MMC) in the micropylar region of the nucellus. It is a large cell containing dense cytoplasm and a prominent nucleus. The MMC (2n) undergoes meiotic division. Meiosis results in the production of four  haploid megaspores. 

 

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 Megaspores are produced from the megaspore mother cells after