Skip to content

Draw labelled diagrams to… (Class 10 Science 2025, Q22)

questionbuddy.in/q/cbse-10-science-2025-31-1-1-q22-draw-labelled-diagrams-different-stages

ScienceCBSE Class 10 · Board exam 2025, set 31/1/1 · 2 marks · Very short answer

CBSE Class 10 Science 2025: question 22

Set in the CBSE Class 10 board exam of 2025, paper 31/1/1, section B, question 22, for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q22 · 2 marks · Very short answerHow do Organisms Reproduce?

Draw labelled diagrams to show different stages of budding in Hydra.

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

Budding begins as a small outgrowth on the body wall.

Hint 2

Show at least three stages and label the tentacles and the bud.

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. Draw three Hydra figures in sequence, each a tubular body with tentacles at the top. Figure 1: the parent Hydra with a small outgrowth (bud) on its side. Figure 2: the bud grows larger and develops tentacles at its tip. Figure 3: a fully formed young Hydra still attached at the base, about to detach.

    1 mark

  2. Labels: tentacles, bud (growing bud / young Hydra) and parent body.

    1 mark

Answer: Labelled diagram of the stages of budding in Hydra (bud forms, grows tentacles, detaches)

Where the marks are

  • Correct diagram showing the stages of budding (1 mark)
  • Correct labelling of tentacles and bud (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from How do Organisms Reproduce?, 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.