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During the menstrual… (Class 12 Biology SQP 2025-26, Q3)

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BiologyCBSE Class 12 · Sample paper, session 2025-26 · 1 mark · MCQ

CBSE Class 12 Biology sample paper 2025-26: question 3

From the official CBSE sample question paper for 2025-26, section A, question 3, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q3 · 1 mark · MCQHuman Reproduction

During the menstrual cycle of a human female, formation of graafian follicle is stimulated by secretion of which of the following gonadotropin hormones?

  1. (A)Estrogen and progesterone
  2. (B)FSH and Estrogen
  3. (C)FSH and LH
  4. (D)Progesterone and LH

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2025-26.

Hints

Open one hint at a time and try again before the next.

Hint 1

The question asks for gonadotropins — which gland secretes them?

Hint 2

Exclude the steroid hormones made by the ovary.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Gonadotropins are pituitary hormones FSH and LH; estrogen and progesterone are ovarian steroids, so only (C) fits.

  2. FSH and LH stimulate follicular development into the Graafian follicle in the follicular phase. Answer (C).

    1 mark

Answer: (C) FSH and LH

Where the marks are

  • Selects option C (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Human Reproduction, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2025-26: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.