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Students to attempt… (Class 10 Science SQP 2026-27, Q11A)

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ScienceCBSE Class 10 · Sample paper, session 2026-27 · 2 marks · Very short answer

CBSE Class 10 Science sample paper 2026-27: question 11(A)

From the official CBSE sample question paper for 2026-27, section A, question 11(A), for 2 marks. Try it first; the hints and our step-by-step solution are below.

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

Students to attempt either option A or B. A. Which parts of the brain perform certain actions for which we do not have any thinking control? What are such actions called, give two examples.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2026-27.

Hints

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

Hint 1

The fore-brain handles thinking. Which other regions of the brain are there?

Hint 2

Think of body actions that happen without you deciding, like salivating at the sight of food.

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. Actions over which we have no thinking control are controlled by the mid-brain and hind-brain (for example, the medulla in the hind-brain).

    ½ mark

  2. Such actions are called involuntary actions.

    ½ mark

  3. Examples (any two): regulation of blood pressure, salivation, vomiting.

    1 mark

Answer: Mid-brain and hind-brain; involuntary actions, e.g. blood pressure regulation, salivation (also vomiting).

Where the marks are

  • Names the mid-brain and hind-brain (½ mark)
  • Calls them involuntary actions (½ mark)
  • Gives any two correct examples (½ + 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 paperSample paper 2026-27: 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.