Reproduction: oogenesis: practice question

A Physiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Physiology · Reproduction: oogenesis

Sample item

At the time of ovulation, at which stage of meiosis is the oocyte arrested?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Metaphase of meiosis II

The primary oocyte is arrested in prophase I from fetal life until the LH surge, then completes meiosis I and arrests in metaphase II at ovulation. Meiosis II is completed only if fertilisation occurs.

Option by option

  • A. Prophase of meiosis I

    Prophase I arrest applies to the primary oocyte before the LH surge.

  • B. Metaphase of meiosis II (correct)

    Correct. The secondary oocyte is arrested in metaphase II until fertilisation.

  • C. Telophase of meiosis II

    Telophase II is reached only after sperm entry.

  • D. Metaphase of meiosis I

    Meiosis I is completed shortly before ovulation, so the arrest is not in metaphase I.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is B, Metaphase of meiosis II. The primary oocyte is arrested in prophase I from fetal life until the LH surge, then completes meiosis I and arrests in metaphase II at ovulation.

Why is "Prophase of meiosis I" not the answer?

Prophase I arrest applies to the primary oocyte before the LH surge.

Why is "Telophase of meiosis II" not the answer?

Telophase II is reached only after sperm entry.

Why is "Metaphase of meiosis I" not the answer?

Meiosis I is completed shortly before ovulation, so the arrest is not in metaphase I.

What concept does this question test?

It tests Reproduction: oogenesis in Physiology. Meiosis II is completed only if fertilisation occurs.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Reproduction: oogenesis?

For each system, sketch the key graph (pressure–volume loop, oxygen dissociation curve, nephron handling) and explain it aloud. Then use the flashcards and the other Physiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.