What is the number of meiotic divisions requi | vedclass

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(B) In angiosperms,one meiotic division produces $4$ microspores (pollen grains) and $1$ functional megaspore (embryo sac). For the formation of $1$ s

Vedclass · Accepted Answer

$125$

Vedclass · Answer

(B) In angiosperms,one meiotic division produces $4$ microspores (pollen grains) and $1$ functional megaspore (embryo sac). For the formation of $1$ seed,$1$ male gamete and $1$ female gamete are required. In the family Cyperaceae,the formation of $1$ seed requires $1$ meiotic division for the male gamete and $1$ meiotic division for the female gamete (since only $1$ out of $4$ megaspores is functional,but in Cyperaceae,all $4$ microspores are functional,yet the female side requires $1$ meiosis per seed). Total meiotic divisions = $n + n/4$ is the standard formula for general angiosperms,but for Cyperaceae,the female side requires $1$ meiosis per seed $(100)$ and the male side requires $100/4 = 25$ meiosis. Total = $100 + 25 = 125$.

What is the number of meiotic divisions required to produce $100$ seeds in the family Cyperaceae?

Similar Questions

The condition in which both male and female reproductive organs are found on the same plant is called:

Identify the plant parts that consist of two generations,one within the other:
$(a)$ Pollen grains inside the anther
$(b)$ Germinated pollen grain with two male gametes
$(c)$ Seed inside the fruit
$(d)$ Embryo sac inside the ovule

Give a scientific reason: Variations are expected in sexually reproducing plants.

What is the viability period of pollen grains in members of the families $Rosaceae$,$Leguminosae$,and $Solanaceae$?

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