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Megasporogenesis

How many of t...

Question

How many of the daughter cells obtained from a megaspore mother cell develops into a female gametophyte?

A

Four

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B

Three

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C

Two

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D

One

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Solution

The correct option is D One
The megaspore mother cell (2n) undergoes reduction division (meiosis) to form linear tetrad of four haploid megaspores by megasporogenesis. Generally, 3 megaspores towards micropylar end degenerate and 4^th towards chalazal end remains is the functional megaspore which develops into a female gametophyte or embryo sac.

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Q. Very short answer type :
Arrange the following in chronological order in the life-cycle of an angiosperm . (a) flower, (b) sporophytic plant, (c) seed, (d) fertilization, (e) megaspore-microspore, (f) endosperm-embryo, (g) megaspore mother cell-microspore mother cell, (h) female gametophyte with egg-male gametophyte with sperm nuclei.

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Megasporogenesis

Standard XIII Biology

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