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State the post-fertilis… (Class 10 Science SQP 2023-24, Q22)

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ScienceCBSE Class 10 · Sample paper, session 2023-24 · 2 marks · Very short answer

CBSE Class 10 Science sample paper 2023-24: question 22

From the official CBSE sample question paper for 2023-24, 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?

State the post-fertilisation changes that lead to fruit formation in plants.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

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

Hint 1

Follow what happens to the zygote, the ovule and the ovary one by one.

Hint 2

Which part of the flower turns into the fruit?

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. After fertilisation, the zygote divides many times and develops into an embryo inside the ovule.

    ½ mark

  2. The ovule forms a tough seed coat and slowly turns into a seed.

    ½ mark

  3. The ovary enlarges and ripens to become the fruit.

    ½ mark

  4. The sepals, petals, stamens, style and stigma usually wither and fall off.

    ½ mark

Answer: Zygote → embryo; ovule → seed; ovary → fruit; other floral parts shrivel and fall

Where the marks are

  • Zygote develops into embryo (0.5 mark)
  • Ovule becomes seed (0.5 mark)
  • Ovary ripens into fruit (0.5 mark)
  • Other floral parts wither and drop (0.5 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 paperSample paper 2023-24: 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.