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Select from the following the… (Class 10 Science 2023, Q11)

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ScienceCBSE Class 10 · Board exam 2023, set 31/1/1 · 1 mark · MCQ

CBSE Class 10 Science 2023: question 11

Set in the CBSE Class 10 board exam of 2023, paper 31/1/1, section A, question 11, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q11 · 1 mark · MCQControl and Coordination

Select from the following the correct statement about tropic movement in plants :

  1. (A)It is due to stimulus of touch and temperature.
  2. (B)It does not depend upon the direction of stimulus received.
  3. (C)It is observed only in roots and not in stems.
  4. (D)It is a growth related movement.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 31/1/1.

Hints

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

Hint 1

Compare the movement of a shoot bending towards light with the folding of touch-me-not leaves.

Hint 2

Does bending towards light involve cells growing?

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. Tropic movements are directional responses (towards or away from a stimulus such as light, gravity, water or chemicals). They occur in both roots and stems.

  2. These movements happen through unequal growth of the plant part, so they are growth-related. The answer is (D).

    1 mark

Answer: Option (D)

Where the marks are

  • Selects growth-related movement (1 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 paper2023 board paper, set 31/1/1: 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.