Skip to content

Assertion (A): A mango seed… (Class 10 Science 2025, Q18)

questionbuddy.in/q/cbse-10-science-2025-31-2-1-q18-mango-seed-germinate-form-mango

ScienceCBSE Class 10 · Board exam 2025, set 31/2/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2025: question 18

Set in the CBSE Class 10 board exam of 2025, paper 31/2/1, 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-basedHeredity

Assertion (A): A mango seed will germinate to form a mango tree.

Reason (R): Heredity determines the process by which traits and characteristics are reliably inherited from parents to offspring.

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of 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 2025 board paper, set 31/2/1.

Hints

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

Hint 1

Why does a seed always give the same kind of plant as its parent?

Hint 2

Does R give that reason?

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 mango seed always grows into a mango tree. A is true.

  2. Heredity is the reliable passing of traits from parents to offspring. R is true.

  3. The seed grows into a mango tree because the traits of the parent are passed on through heredity. So R explains A: (A).

    1 mark

Answer: (A)

Where the marks are

  • Both true and R explains A, option (A) (1 mark)

Revise the chapter

  • Chapter: Heredity (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Heredity, one at a time, marked against the answer key and marking points.Back to the full paper2025 board paper, set 31/2/1: 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.