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Name the gland and the… (Class 10 Science 2023, Q29a)

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ScienceCBSE Class 10 · Board exam 2023, set 31/6/1 · 3 marks · Short answer

CBSE Class 10 Science 2023: question 29(a)

Set in the CBSE Class 10 board exam of 2023, paper 31/6/1, section C, question 29(a), for 3 marks. Try it first; the hints and our step-by-step solution are below.

Q29(a) · 3 marks · Short answerControl and Coordination

Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when this hormone is secreted into the blood.

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

This is the 'fight or flight' hormone, made by glands that sit on top of the kidneys.

Hint 2

Think about what your heart and breathing do when you are frightened.

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. The gland is the adrenal gland,

    ½ mark

  2. and the hormone it secretes is adrenaline.

    ½ mark

  3. Response 1: the heart beats faster, so more oxygen is supplied to the muscles.

    1 mark

  4. Response 2: the breathing rate increases, and blood supply to the digestive system and skin is reduced and diverted to the skeletal muscles.

    1 mark

Answer: Adrenal gland; adrenaline. Responses: faster heartbeat, faster breathing (and blood diverted to skeletal muscles).

Where the marks are

  • Names adrenal gland (½ mark)
  • Names adrenaline (½ mark)
  • Any one correct response (1 mark)
  • Any second correct response (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 31/6/1: 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.