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Absorption of Water and Minerals by Roots

ICSE · Class 10 · Biology

Complete topic list for Absorption of Water and Minerals by Roots in ICSE Class 10 Biology. Key concepts, sub-topics, and what to focus on for board exams.

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

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

Frequently Asked Questions

What are the important topics in Absorption of Water and Minerals by Roots for ICSE Class 10 Biology?
Absorption of Water and Minerals by Roots covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Absorption of Water and Minerals by Roots — ICSE Class 10 Biology?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and 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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