Indicate the stages where meiosis and mitosis | vedclass

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Question

(A) The process of female gametophyte development involves the following steps:
$1$. The diploid Megaspore Mother Cell $(2n)$ undergoes Meiosis to pr

Vedclass · Accepted Answer

$1 = 	ext{Meiosis}, 2 = 	ext{Mitosis}, 3 = 	ext{Mitosis}$

Vedclass · Answer

(A) The process of female gametophyte development involves the following steps:
$1$. The diploid Megaspore Mother Cell $(2n)$ undergoes Meiosis to produce four haploid megaspores. This corresponds to stage $1$.
$2$. The functional megaspore undergoes three successive rounds of Mitosis to form an $8$-nucleate embryo sac. This corresponds to stage $2$.
$3$. The differentiation of the egg cell within the embryo sac does not involve further cell division (mitosis or meiosis) from the embryo sac stage; the egg is already formed as part of the egg apparatus. Thus,stage $3$ does not represent a division step.
Therefore,the correct sequence is $1 = 	ext{Meiosis}$ and $2 = 	ext{Mitosis}$.

Indicate the stages where meiosis and mitosis occur $(1, 2$ or $3)$ in the flow chart: Megaspore mother cell $\xrightarrow{1}$ Megaspores $\xrightarrow{2}$ Embryo sac $\xrightarrow{3}$ Egg.

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