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What kind of respiration… (Class 10 Science 2026, Q11)

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ScienceCBSE Class 10 · Board exam 2026, set 31/3/1 · 2 marks · Very short answer

CBSE Class 10 Science 2026: question 11

Set in the CBSE Class 10 board exam of 2026, paper 31/3/1, section A, question 11, for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q11 · 2 marks · Very short answerLife Processes

What kind of respiration provides more energy and why ?

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/3/1.

Hints

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

Hint 1

Compare respiration with oxygen and respiration without oxygen.

Hint 2

Ask yourself in which type glucose is broken down completely to and water.

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. Aerobic respiration provides more energy.

    1 mark

  2. Reason: in aerobic respiration glucose is completely broken down in the presence of oxygen into and water. This releases much more energy (ATP) than anaerobic respiration, where glucose is only partly broken down into ethanol and or into lactic acid.

    1 mark

Answer: Aerobic respiration, because glucose is completely broken down in the presence of oxygen, releasing more energy.

Where the marks are

  • Names aerobic respiration (1 mark)
  • Gives the reason: complete breakdown of glucose in the presence of oxygen releases more energy (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 paper2026 board paper, set 31/3/1: 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.