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Suggest a suitable… (Class 12 Biology SQP 2025-26, Q22)

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BiologyCBSE Class 12 · Sample paper, session 2025-26 · 3 marks · Short answer

CBSE Class 12 Biology sample paper 2025-26: question 22

From the official CBSE sample question paper for 2025-26, section C, question 22, for 3 marks. Try it first; the hints and our step-by-step solution are below.

Q22 · 3 marks · Short answerCompetency-basedReproductive Health

Suggest a suitable contraceptive device for the following cases with justification.
(i) Mohini does not want to take the risk of conception and sexually transmitted infections (STIs).
(ii) Lalita has two children and does not want any more children.
(iii) Geeta wants a contraceptive that she can take till she wants to avoid conception and can resume back to her fertile life without the intervention of the doctor. Also, it should have a lower failure rate.

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

Only one method also protects against infections.

Hint 2

For 'no more children' think of a permanent method; for 'stop any time' think of something taken daily.

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. (i) Mohini – Condoms. A condom is a barrier method that stops sperm entering the vagina or cervix. It also blocks the transfer of microbes, so it protects against both pregnancy and STIs.

    1 mark

  2. (ii) Lalita – Surgical sterilisation: tubectomy for her or vasectomy for her husband. It is a terminal, highly effective method, though poorly reversible, which suits a couple wanting no more children.

    1 mark

  3. (iii) Geeta – Oral contraceptive pills (progestogen alone or progestogen–estrogen combination, e.g., Saheli). They inhibit ovulation and implantation and have a very low failure rate. They can be taken as long as conception is to be avoided, and stopping them restores fertility without a doctor's intervention.

    1 mark

Answer: (i) Condoms; (ii) Tubectomy/vasectomy (sterilisation); (iii) Oral contraceptive pills.

Where the marks are

  • Condom with reason – blocks sperm and STI microbes (1 mark)
  • Tubectomy/vasectomy – highly effective terminal method (1 mark)
  • Oral pills – effective, reversible, user-controlled (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Reproductive Health, 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.