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The Vas deferens and… (Class 10 Science SQP 2026-27, Q5)

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ScienceCBSE Class 10 · Sample paper, session 2026-27 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2026-27: question 5

From the official CBSE sample question paper for 2026-27, section A, question 5, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q5 · 1 mark · MCQCompetency-basedHow do Organisms Reproduce?

The Vas deferens and the Oviduct are both targets for surgical contraception (Vasectomy and Tubectomy respectively). Analysing the process of reproduction, what common biological event is prevented by blocking both these structures?

  1. (A)The production of gametes (sperm and egg).
  2. (B)The implantation of the fertilized egg into the uterine wall.
  3. (C)The successful meeting and fusion of the male and the female gametes.
  4. (D)The release of hormones - testosterone and estrogen.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2026-27.

Hints

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

Hint 1

Are the testes and ovaries affected by these surgeries?

Hint 2

What is the job of these tubes in transporting gametes?

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 vas deferens carries sperms from the testes. The oviduct carries the egg from the ovary and is the site of fertilisation.

  2. Blocking these tubes does not stop gamete or hormone production. It only stops sperm and egg from reaching each other.

  3. So the event prevented is the meeting and fusion of male and female gametes (fertilisation). The correct option is (C).

    1 mark

Answer: Option (C): The successful meeting and fusion of the male and the female gametes.

Where the marks are

  • Selects (C): blocking the tubes prevents gametes meeting, so fertilisation cannot occur (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from How do Organisms Reproduce?, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2026-27: 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.