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Which of the plant hormones… (Class 10 Science 2026, Q11B)

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ScienceCBSE Class 10 · Board exam 2026, set 31/5/1 · 2 marks · Very short answer

CBSE Class 10 Science 2026: question 11(B)

Set in the CBSE Class 10 board exam of 2026, paper 31/5/1, section A, question 11(B), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q11(B) · 2 marks · Very short answerControl and Coordination

Which of the plant hormones are responsible for the following processes ?

  1. (i)

    Promote cell division

    0 marks
  2. (ii)

    Inhibition of growth

    0 marks
  3. (iii)

    Detection of light

    0 marks
  4. (iv)

    Wilting of leaves

    0 marks

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/5/1.

Hints

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

Hint 1

Recall the four plant hormones in NCERT: auxin, gibberellin, cytokinin, abscisic acid.

Hint 2

Only one of them is a growth inhibitor, and it appears twice in this list.

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) Promoting cell division – Cytokinin.

    ½ mark

  2. (ii) Inhibition of growth – Abscisic acid (ABA).

    ½ mark

  3. (iii) Response to light (phototropism) – Auxin, which moves to the shaded side and makes cells there grow longer.

    ½ mark

  4. (iv) Wilting of leaves – Abscisic acid (ABA).

    ½ mark

Answer: (i) Cytokinin; (ii) Abscisic acid; (iii) Auxin; (iv) Abscisic acid

Where the marks are

  • Cytokinin for cell division (½ mark)
  • Abscisic acid for growth inhibition (½ mark)
  • Auxin for light response (½ mark)
  • Abscisic acid for wilting of leaves (½ mark)

Revise the chapter

Practise this chapterBoard-style questions from Control and Coordination, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 31/5/1: 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.