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Absorption of Water and Minerals by Roots — Syllabus

ICSE · Class 10 · Biology

What Absorption of Water and Minerals by Roots covers in ICSE Class 10 Biology: 4 topics, for the 2026-27 session.

43 questions38 flashcards5 concepts

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A table comparing the percentage of water by body weight in various land plants, woody plants, herbaceous plants, aquatic plants, and animals.
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4 Topics · ICSE Class 10 Biology · 2026-27

Topics in Absorption of Water and Minerals by Roots

1

Importance of Water and Minerals

  • Water forms a large part of protoplasm.
  • Plants generally have more water than animals.
  • Water helps in opening and closing of stomata by providing turgidity.
2

Imbibition and Diffusion

  • Imbibition is the adsorption of water molecules by dry hydrophilic colloids due to surface attraction.
  • Imbibition occurs along the diffusion gradient.
  • Maximum imbibition occurs in agar-agar, protein, pectin and cellulose.
3

Membranes and Osmosis

  • A permeable membrane allows both solute and solvent molecules to pass through.
  • A semi-permeable membrane allows only water molecules to pass through.
  • A selectively or differentially permeable membrane allows water and some selected solute molecules to pass through.
4

Endosmosis, Exosmosis and Tonicity

  • Endosmosis is the inward movement of water into a cell placed in a hypotonic solution.
  • Endosmosis makes the cell turgid.
  • Exosmosis is the outward movement of water out of a cell placed in a hypertonic solution.

Key Concepts

Central concept: Absorption of water and minerals by roots and their movement in plants

Importance of waterImportance of mineralsImbibitionDiffusionMembranesOsmosisEndosmosis and exosmosisTonicity

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Frequently Asked Questions

What are the important topics in Absorption of Water and Minerals by Roots for ICSE Class 10 Biology?
Key topics in Absorption of Water and Minerals by Roots include Importance of Water and Minerals, Imbibition and Diffusion, Membranes and Osmosis, Endosmosis, Exosmosis and Tonicity. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How should I revise Absorption of Water and Minerals by Roots for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 43 practice questions on Absorption of Water and Minerals by Roots. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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