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(i) Name the part performing… (Class 10 Science 2025, Q35B)

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ScienceCBSE Class 10 · Board exam 2025, set 31/4/1 · 5 marks · Long answer

CBSE Class 10 Science 2025: question 35(B)

Set in the CBSE Class 10 board exam of 2025, paper 31/4/1, section D, question 35(B), for 5 marks. Try it first; the hints and our step-by-step solution are below.

Q35(B) · 5 marks · Long answerHow do Organisms Reproduce?

(i) Name the part performing following functions in human male reproductive system :

  1. (a)

    Carries sperm

    0 marks
  2. (b)

    Production of male gametes

    0 marks
  3. (c)

    Whose secretion makes the transport of sperms easier

    0 marks
  4. (d)

    Provide suitable temperature for sperm formation

    0 marks
  5. (ii)

    Write any two characteristics of sperms.

    0 marks
  6. (iii)

    What are surgical contraceptive methods? Give the side effect caused by this procedure.

    0 marks

Source: official question paper from cbse.gov.in (PDF). See it in the full 2025 board paper, set 31/4/1.

Hints

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

Hint 1

Follow the path of sperms from where they are made to where they leave the body.

Hint 2

The testes lie outside the abdomen. Why might that be?

Hint 3

Surgical methods cut or tie a tube. Which tube in each sex carries the 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. (i)(a) Carries sperms: vas deferens.

    ½ mark

  2. (i)(b) Produces male gametes: testes.

    ½ mark

  3. (i)(c) Secretion makes the transport of sperms easier: prostate gland and seminal vesicles.

    ½ mark

  4. (i)(d) Provides a suitable (lower) temperature for sperm formation: scrotum.

    ½ mark

  5. (ii) Sperms are tiny cells that consist mainly of genetic material. Each sperm has a long tail that helps it move towards the female germ cell.

    1 mark

  6. (iii) Surgical contraceptive methods block the gamete-carrying tube: the vas deferens in males (vasectomy) or the fallopian tube in females (tubectomy). This prevents sperm and egg from meeting, so fertilisation does not occur.

    1 mark

  7. (iii) Side effect: if the surgery is not performed properly, it can cause infections and other problems.

    1 mark

Answer: (i)(a) Vas deferens (b) Testes (c) Prostate gland/seminal vesicles (d) Scrotum; (ii) small in size, contain genetic material, have a tail for movement; (iii) blocking the vas deferens or fallopian tube by surgery; it can cause infection if not done properly.

Where the marks are

  • Each correct part named in (i)(a)–(d) (½ mark each × 4)
  • Any two characteristics of sperms (½ mark each)
  • Explains surgical methods: blocking the vas deferens or fallopian tube to prevent fertilisation (1 mark)
  • Side effect: infection if not done properly (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 paper2025 board paper, set 31/4/1: 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.