Identify the correct ratio of male gametes,ve | vedclass

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(D) i. $1$ microspore mother cell gives $4$ pollen grains. Therefore,$80$ pollen grains are produced by $80 / 4 = 20$ microspore mother cells.ii. Each

Vedclass · Accepted Answer

$8 : 4 : 4 : 1$

Vedclass · Answer

(D) i. $1$ microspore mother cell gives $4$ pollen grains. Therefore,$80$ pollen grains are produced by $80 / 4 = 20$ microspore mother cells.ii. Each mature pollen grain contains $1$ vegetative cell and $1$ generative cell. Thus,$80$ pollen grains contain $80$ vegetative cells and $80$ generative cells.iii. Each generative cell undergoes mitosis to produce $2$ male gametes. Therefore,$80$ generative cells produce $80 	imes 2 = 160$ male gametes.iv. The ratio of male gametes : vegetative cells : generative cells : microspore mother cells is $160 : 80 : 80 : 20$.Dividing by $20$,we get the ratio $8 : 4 : 4 : 1$.

List-$I$ (Types of Stamens)	List-$II$ (Example)
$A$. Monoadelphous	$I$. Citrus
$B$. Diadelphous	$II$. Pea
$C$. Polyadelphous	$III$. Lily
$D$. Epiphyllous	$IV$. China-rose

Identify the correct ratio of male gametes,vegetative cells,generative cells and microspore mother cells produced in a microsporangium if $80$ pollen grains are released from it.

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Match List-$I$ with List-$II$:
List-$I$ (Types of Stamens) List-$II$ (Example)
$A$. Monoadelphous $I$. Citrus
$B$. Diadelphous $II$. Pea
$C$. Polyadelphous $III$. Lily
$D$. Epiphyllous $IV$. China-rose

Choose the correct answer from the options given below:

Select the option that represents the correct statement.

Which of the following are devices for self-pollination?

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