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Which of the following groups… (Class 10 Science 2025, Q15)

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ScienceCBSE Class 10 · Board exam 2025, set 31/1/1 · 1 mark · MCQ

CBSE Class 10 Science 2025: question 15

Set in the CBSE Class 10 board exam of 2025, paper 31/1/1, section A, question 15, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q15 · 1 mark · MCQOur Environment

Which of the following groups do not constitute a food chain?
(i) Wolf, rabbit, grass, lion
(ii) Plankton, man, grasshopper, fish
(iii) Hawk, grass, snake, grasshopper, frog
(iv) Grass, snake, wolf, tiger

  1. (A)(i) and (iv)
  2. (B)(i) and (iii)
  3. (C)(ii) and (iii)
  4. (D)(ii) and (iv)

Source: official question paper from cbse.gov.in (PDF). See it in the full 2025 board paper, set 31/1/1.

Hints

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

Hint 1

Every food chain must start with a producer eaten by a herbivore.

Hint 2

Check whether each organism can actually eat the one before it.

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. (i) Grass → rabbit → wolf → lion is a valid chain.

  2. (iii) Grass → grasshopper → frog → snake → hawk is a valid chain.

  3. (ii) has no proper sequence: man does not eat plankton, and grasshoppers do not eat man. (iv) fails because a snake does not eat grass.

  4. So (ii) and (iv) are not food chains, and the answer is option (D).

    1 mark

Answer: (ii) and (iv), option (D)

Where the marks are

  • Chooses option (D) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Our Environment, one at a time, marked against the answer key and marking points.Back to the full paper2025 board paper, set 31/1/1: 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.