In angiosperms,the functional megaspore of a | vedclass

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(D) In angiosperms,the megaspore mother cell undergoes meiosis to form a linear tetrad of four haploid megaspores. Out of these four megaspores,the th

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Fourth from the micropyle (chalazal end)

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(D) In angiosperms,the megaspore mother cell undergoes meiosis to form a linear tetrad of four haploid megaspores. Out of these four megaspores,the three megaspores located towards the micropylar end degenerate. The single megaspore located towards the chalazal end remains functional and develops into the embryo sac (female gametophyte). Therefore,the functional megaspore is the one farthest from the micropyle,which is the fourth one.

Column-$I$	Column-$II$
$(a)$ Funicle	$(i)$ Small opening of ovule
$(b)$ Integuments	$(ii)$ Stalk of ovule
$(c)$ Chalaza	$(iii)$ Protective envelopes of ovule
$(d)$ Hilum	$(iv)$ Junction part of ovule and stalk
$(e)$ Micropyle	$(v)$ Base of ovule

In angiosperms,the functional megaspore of a linear tetrad is the:

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