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Of a closed stomata: (1), (2)… (Class 10 Science 2023, Q5)

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ScienceCBSE Class 10 · Board exam 2023, set 31/6/1 · 1 mark · MCQ

CBSE Class 10 Science 2023: question 5

Set in the CBSE Class 10 board exam of 2023, paper 31/6/1, section A, question 5, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q5 · 1 mark · MCQLife Processes

In the given diagram of a closed stomata: (1), (2), (3) and (4) respectively are

  1. (A)nucleus, chloroplast, guard cell, vacuole
  2. (B)nucleus, chloroplast, vacuole, guard cell
  3. (C)chloroplast, nucleus, vacuole, guard cell
  4. (D)vacuole, guard cell, nucleus, chloroplast

Figure in the paper: Two closed guard cells forming a stoma, kidney/bean shaped with a central pore region. Four labels: (1) points to a dark round structure inside the left cell (nucleus), (2) points to a small green oval body (chloroplast), (3) points to the large clear central region of the cell (vacuole), (4) points to the thick outer wall region of the guard cell (guard cell wall). See it in the official paper.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 31/6/1.

Hints

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

Hint 1

Which structure is green?

Hint 2

The large clear space inside a plant cell is the vacuole.

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. From the figure, (1) is the dark round nucleus and (2) is the green chloroplast.

  2. (3) is the large clear vacuole and (4) is the guard cell. Hence the answer is option (B).

    1 mark

Answer: Option (B)

Where the marks are

  • Nucleus, chloroplast, vacuole, guard cell (1 mark)

Revise the chapter

  • Chapter: Life Processes (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Life Processes, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 31/6/1: 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.