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Name and explain a surgical… (Class 12 Biology 2023, Q22)

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BiologyCBSE Class 12 · Board exam 2023, set 57/5/1 · 3 marks · Short answer

CBSE Class 12 Biology 2023: question 22

Set in the CBSE Class 12 board exam of 2023, paper 57/5/1, section C, question 22, for 3 marks. Try it first; the hints and our step-by-step solution are below.

Q22 · 3 marks · Short answerReproductive Health

Name and explain a surgical contraceptive method that can be adopted by the male partner of a couple.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 57/5/1.

Hints

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

Hint 1

Surgical contraception is also called sterilisation. The female method is tubectomy.

Hint 2

Think about which duct carries sperms from the epididymis and what is done to it.

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. The surgical contraceptive method (sterilisation) for males is vasectomy.

    1 mark

  2. In vasectomy, a small part of the vas deferens is cut or removed through a small incision on the scrotum.

    1 mark

  3. The cut ends are tied up, which blocks the transport of sperms. The semen therefore contains no sperms, and conception is prevented.

    1 mark

Answer: Vasectomy: a small part of the vas deferens is removed or cut and tied, blocking sperm transport.

Where the marks are

  • Names vasectomy (1 mark)
  • States that a small part of the vas deferens is cut or removed (1 mark)
  • States that the ends are tied, blocking sperm transport (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 paper2023 board paper, set 57/5/1: 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.