In angiosperms,microsporogenesis and megaspor | vedclass

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(A) : In angiosperms,microsporogenesis,i.e.,the formation of microspores (or pollen grains),occurs by the meiotic divisions of diploid microspore moth

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involve meiosis

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(A) : In angiosperms,microsporogenesis,i.e.,the formation of microspores (or pollen grains),occurs by the meiotic divisions of diploid microspore mother cells (or pollen mother cells). Microsporogenesis takes place in the anther.Megasporogenesis,i.e.,the formation of megaspores,occurs by the meiotic divisions of diploid megaspore mother cells. Megasporogenesis takes place in the ovule.Both processes involve meiosis to reduce the chromosome number from diploid $(2n)$ to haploid $(n)$.

Column-$I$	Column-$II$
$A$. Cleistogamy	$m$. Insect pollination
$B$. Geitonogamy	$n$. Bud pollination
$C$. Entomophily	$o$. Pollination between flowers in the same plant
$D$. Xenogamy	$p$. Wind pollination
	$q$. Cross pollination

In angiosperms,microsporogenesis and megasporogenesis

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