How many meiotic divisions are required to pr | vedclass

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(D) In angiosperms,each Microspore Mother Cell $(MMC)$ undergoes meiosis to produce $4$ microspores (pollen grains).Similarly,each Megaspore Mother Ce

Vedclass · Accepted Answer

$100$

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(D) In angiosperms,each Microspore Mother Cell $(MMC)$ undergoes meiosis to produce $4$ microspores (pollen grains).Similarly,each Megaspore Mother Cell $(MMC)$ undergoes meiosis to produce $4$ megaspores,out of which only $1$ remains functional to form the embryo sac (ovule).To produce $100$ seeds (grains) of wheat,we need $100$ functional megaspores and $100$ functional microspores.For $100$ megaspores,$100$ meiotic divisions are required in $MMC$s.For $100$ microspores,$100/4 = 25$ meiotic divisions are required in $MMC$s.Total meiotic divisions = $100 + 25 = 125$.However,the question specifically asks for the number of $MMC$s undergoing meiosis to produce $100$ grains. Since each grain requires one functional megaspore,$100$ meiotic divisions are required for the female gametophyte development. If the question implies the total number of divisions for both male and female gametes,it is $125$. Given standard textbook patterns for this specific question,the answer is $125$. Since $125$ is not an option,we evaluate the male contribution: $100$ grains require $100$ pollen grains,which is $25$ divisions. If the question refers only to the female side (ovule development),the answer is $100$.

How many meiotic divisions are required to produce $100$ grains of wheat?

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