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Question -

Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.



Answer -

(a)

Microsporogenesis

Megasporogenesis

1.

It is the process of the formation of microspore tetrads from a microspore mother cell through meiosis.

It is the process of the formation of the four megaspores from a megaspore mother cell in the region of the nucellus through meiosis

2.

It occurs inside the pollen sac of the anther.

It occurs inside the ovule.

(b) Both events (microsporogenesis and megasporogenesis) involve the process of meiosis or reduction division which results in the formation of haploid gametes from the microspore and megaspore mother cells.
(c) Microsporogenesis results in the formation of haploid microspores from a diploid microspore mother cell. On the other hand, megasporogenesis results in the formation of haploid megaspores from a diploid megaspore mother cell.

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