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Question Nos. 8 & 9 consist of… (Class 10 Science 2026, Q8)

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ScienceCBSE Class 10 · Board exam 2026, set 31/4/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2026: question 8

Set in the CBSE Class 10 board exam of 2026, paper 31/4/1, section A, question 8, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q8 · 1 mark · Assertion-reasonCompetency-basedHow do Organisms Reproduce?

Question Nos. 8 & 9 consist of two statements: Assertion (A) and Reason (R). Answer these questions selecting the appropriate option from (A), (B), (C) and (D) given below.

Assertion (A): Variations are not often seen in off-springs produced by asexual reproduction.

Reason (R): DNA molecule generated by replication is not similar to the original DNA.

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false, but Reason (R) is true.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/4/1.

Hints

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

Hint 1

Is DNA copying accurate?

Hint 2

Replication gives similar, not identical, copies.

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. A is true: offspring of asexual reproduction show very few variations.

  2. R is false: DNA copying produces copies that are similar to the original DNA, with only minor errors. Answer: option (C).

    1 mark

Answer: (C)

Where the marks are

  • A true, R false, option (C) (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 paper2026 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.