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ScienceCBSE Class 10 · Board exam 2026, set 31/1/1 · 3 marks · Short answer

CBSE Class 10 Science 2026: question 14

Set in the CBSE Class 10 board exam of 2026, paper 31/1/1, section A, question 14, for 3 marks. Try it first; the hints and our step-by-step solution are below.

Q14 · 3 marks · Short answerControl and Coordination

Give differences between the following:

  1. (a)

    Nephron and neuron

    0 marks
  2. (b)

    Sensory nerve and motor nerve

    0 marks
  3. (c)

    Consumers and decomposers

    0 marks

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

Hints

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

Hint 1

Ask which organ system each structure belongs to.

Hint 2

For nerves, think about the direction in which the message travels.

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) A nephron is the structural and functional (filtration) unit of the kidney; it filters nitrogenous wastes from blood. A neuron is the structural and functional unit of the nervous system; it transmits information (impulses) from one part of the body to another.

    1 mark
  2. (b) A sensory nerve carries impulses from receptors to the CNS (brain and spinal cord). A motor nerve carries impulses from the CNS to effectors (muscles or glands).

    1 mark
  3. (c) Consumers feed on producers or other consumers and pass energy along the food chain. Decomposers break down dead organic matter into simple inorganic substances and recycle nutrients back into the environment.

    1 mark

Answer: (a) Nephron: unit of kidney, filters blood; Neuron: unit of nervous system, transmits impulses. (b) Sensory: receptor → CNS; Motor: CNS → effector. (c) Consumers feed on other organisms; Decomposers break down dead matter and recycle nutrients.

Where the marks are

  • One correct difference between nephron and neuron (1 mark)
  • Direction of impulse in sensory vs motor nerve (1 mark)
  • One correct difference between consumers and decomposers (1 mark)

Revise the chapter

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.