Skip to content

“The timing and the amount… (Class 10 Science 2026, Q10a)

questionbuddy.in/q/cbse-10-science-2026-31-2-1-q10a-timing-amount-hormone-secreted-gland

ScienceCBSE Class 10 · Board exam 2026, set 31/2/1 · 2 marks · Very short answer

CBSE Class 10 Science 2026: question 10(a)

Set in the CBSE Class 10 board exam of 2026, paper 31/2/1, section A, question 10(a), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q10(a) · 2 marks · Very short answerControl and Coordination

“The timing and the amount of hormone secreted by a gland are regulated in the human body.” Justify this statement with the help of an example.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/2/1.

Hints

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

Hint 1

Think of how the body 'senses' when a hormone is needed.

Hint 2

Consider the pancreas and the level of sugar in the blood.

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 timing and amount of a hormone released are controlled by a feedback mechanism: the body detects the level of a substance and adjusts hormone release to match.

    1 mark

  2. Example (insulin): when blood sugar rises, cells of the pancreas detect it and secrete more insulin. As the blood sugar level falls, insulin secretion is reduced. Insulin is therefore released only when needed and in the right amount.

    1 mark

Answer: Hormone secretion is regulated by feedback mechanisms, e.g. the pancreas secretes more insulin when blood sugar rises and less when it falls.

Where the marks are

  • States that timing and amount are regulated by a feedback mechanism (1 mark)
  • Gives a correct example, e.g. insulin release by the pancreas changing with blood sugar level (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 paper2026 board paper, set 31/2/1: 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.