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(B) The development of the embryo sac from a single functional megaspore is known as monosporic development.$1$. The nucleus of the functional megaspo

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(B) The development of the embryo sac from a single functional megaspore is known as monosporic development.$1$. The nucleus of the functional megaspore undergoes the first mitotic division to form two nuclei.$2$. These two nuclei undergo a second mitotic division to form four nuclei.$3$. These four nuclei undergo a third mitotic division to form eight nuclei.Thus,a total of $3$ successive mitotic divisions are required to produce $8$ nuclei from a single functional megaspore.

How many mitotic divisions are required for the formation of an eight-nucleate embryo sac from a functional megaspore?

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