During the ovum formation, meiosis 1 occurs in

Primordial germ cell

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Primary oocyte

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Oogonium

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Secondary oocyte

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Solution

The correct option is B Primary oocyte
In oogenesis, diploid oogonium goes through mitosis, until one develops into primary oocyte, which begins the first meiotic division, but then arrest. It will finish this division as it develops into follicle, giving rise to a haploid secondary oocyte and a smaller polar body.
Thus, the correct answer is option (B).

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Similar questions

Q. Following statements are given w.r.t. gametogenesis.
(a) Meiosis

1^{s t}

occurs in primary oocyte
(b) Meiosis

2^{n d}

may start but can’t be completed in virgin woman’s secondary oocyte
(c) Meiosis

1^{s t}

is completed in follicular phase of menstrual cycle
(d) Meiosis

2^{n d}

produces three polar bodies and one ovum
From above

Q. Primordial ovum enters meiotic division and gets arrested during stage.

Q. Assertion :Only a single functional female gamete is formed from each primary oocyte cell. Reason: Meiosis in each primary oocyte gives rise to only one cell, which functions as ovum.

Assertion: Newly developed oogonia cells get infiltrated by certain somatic cells in the ovary.

Reason: This infiltration occurs to lay down formation of primordial follicles. Layer of somatic cells surrounds the oocyte and the somatic cells differentiate into granulosa cells.

Why does meiosis occur during the formation of gametes?

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