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Answer the following. (Class 10 Science SQP 2023-24, Q35b)

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ScienceCBSE Class 10 · Sample paper, session 2023-24 · 5 marks · Long answer

CBSE Class 10 Science sample paper 2023-24: question 35(b)

From the official CBSE sample question paper for 2023-24, section D, question 35(b), for 5 marks. Try it first; the hints and our step-by-step solution are below.

Q35(b) · 5 marks · Long answerCompetency-basedControl and Coordination

Answer the following.

  1. (a)

    A doctor has advised Sameer to reduce sugar intake in his diet and do regular exercise after checking his blood test reports. Which disease do you think Sameer is suffering from? Name the hormone responsible for this disease and the organ producing the hormone.

    3 marks
  2. (b)

    Which hormone is present in the areas of rapid cell division in a plant and which hormone inhibits the growth?

    2 marks

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

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

Hint 1

Reducing sugar intake suggests a problem with controlling blood sugar level.

Hint 2

Which hormone lowers blood sugar, and which gland makes it? Among plant hormones, one promotes cell division and one is called a growth inhibitor.

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. (a) The doctor asked Sameer to cut down sugar and exercise. This means his blood sugar level is high, so Sameer is suffering from diabetes (diabetes mellitus).

    1 mark

  2. (a) The hormone involved is insulin. Insulin lowers blood sugar. When it is secreted in too little amount, the blood sugar level rises.

    1 mark

  3. (a) Insulin is produced by the pancreas.

    1 mark

  4. (b) Cytokinins are present in greater concentration in areas of rapid cell division, such as fruits and seeds, and they promote cell division.

    1 mark

  5. (b) Abscisic acid inhibits growth. It also causes effects such as wilting of leaves.

    1 mark

Answer: (a) Diabetes; hormone: insulin; organ: pancreas. (b) Cytokinins in areas of rapid cell division; abscisic acid inhibits growth.

Where the marks are

  • Names the disease as diabetes (1 mark)
  • Names insulin as the hormone (1 mark)
  • Names pancreas as the organ secreting it (1 mark)
  • Names cytokinins (1 mark)
  • Names abscisic acid as the growth inhibitor (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 paperSample paper 2023-24: 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.