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Photosynthesis takes place in… (Class 10 Science 2024, Q22)

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ScienceCBSE Class 10 · Board exam 2024, set 31/2/1 · 2 marks · Very short answer

CBSE Class 10 Science 2024: question 22

Set in the CBSE Class 10 board exam of 2024, paper 31/2/1, 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 answerLife Processes

Photosynthesis takes place in the leaves and the food prepared by it reaches other parts of the plants. Name the process involved and explain it.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/2/1.

Hints

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

Hint 1

Which tissue carries food in plants?

Hint 2

The name of the process means moving from one location to another.

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. The process is translocation.

    ½ mark

  2. Soluble products of photosynthesis, such as sucrose, are carried through the phloem, in the sieve tubes with the help of companion cells.

    ½ mark

  3. Transport happens in both upward and downward directions, to roots, fruits, seeds and growing parts.

    ½ mark

  4. Energy from ATP is used to load sucrose into the phloem. This raises the osmotic pressure, so water enters and pushes the food to the parts where it is needed.

    ½ mark

Answer: Translocation: transport of food through phloem (sieve tubes and companion cells) in both directions, using energy (ATP)

Where the marks are

  • Names translocation (½ mark)
  • Food carried through phloem sieve tubes with companion cells (½ mark)
  • Movement both upward and downward (½ mark)
  • Uses energy (ATP) and osmotic pressure (½ 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 paper2024 board paper, set 31/2/1: 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.