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Assertion (A) : Offsprings… (Class 10 Science 2024, Q18)

questionbuddy.in/q/cbse-10-science-2024-31-3-1-q18-offsprings-produced-asexual-reproduction-genetically

ScienceCBSE Class 10 · Board exam 2024, set 31/3/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2024: question 18

Set in the CBSE Class 10 board exam of 2024, paper 31/3/1, section A, question 18, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q18 · 1 mark · Assertion-reasonCompetency-basedHow do Organisms Reproduce?

Assertion (A) : Offsprings produced by asexual reproduction are genetically similar to the parents.
Reason (R) : Asexual reproduction involves a single parent.

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

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/3/1.

Hints

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

Hint 1

How many parents give DNA in asexual reproduction?

Hint 2

Does the single-parent fact explain the similarity?

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. Asexual reproduction involves only one parent, with no fusion of gametes. Both statements are true.

  2. Because DNA comes from a single parent, the offspring are genetically similar to it. R explains A, option (A).

    1 mark

Answer: Option (A)

Where the marks are

  • Both true and R correctly explains A (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 paper2024 board paper, set 31/3/1: 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.