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Chapter Summary

Transpiration

ICSE · Class 10 · Biology

Summary of Transpiration for ICSE Class 10 Biology. Key concepts, important points, and chapter overview.

44 questions22 flashcards5 concepts

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A comparison chart highlighting the key differences between transpiration, evaporation, and perspiration in terms of process type, speed, cellular involvement, and primary function.
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Overview

Transpiration is a vital physiological process in plants where water is lost as water vapour from aerial parts of the plant. Unlike simple evaporation, transpiration is a controlled biological process that plays crucial roles in plant survival, water transport, and temperature regulation. This proce

Key Concepts

Transpiration is the loss of water

Transpiration is the loss of water vapours from aerial parts of a plant (stem, leaves, buds, flowers) to the atmosphere. It is a physiological process

Three types

Three types: 1) Stomatal transpiration (80-90% of total) - through stomata on leaves, 2) Cuticular transpiration (3-9%) - through waxy cuticle layer,

Stomata are controlled by guard cells

Stomata are controlled by guard cells that contain chloroplasts. During day, photosynthesis produces glucose, increasing osmotic pressure. Guard cells

External factors

External factors: light, temperature, wind, humidity, soil water content, CO₂ concentration, atmospheric pressure. Internal factors: leaf arrangement,

Water moves upward from roots

Water moves upward from roots to leaves through xylem vessels due to three forces: transpiration pull (created by water loss), cohesive forces (hydrog

Learning Objectives

  • Understand the definition and mechanism of transpiration
  • Differentiate between evaporation, transpiration, and perspiration
  • Learn about the three types of transpiration: stomatal, cuticular, and lenticular
  • Understand the structure and functioning of stomata
  • Analyze factors affecting transpiration rate

Frequently Asked Questions

What are the important topics in Transpiration for ICSE Class 10 Biology?
Key topics in Transpiration include Stomatal Opening vs Closing — The Correct Mechanism, Transpiration - Complete Chapter Concept Map, Overview of Transpiration — All Key Concepts. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Transpiration — ICSE Class 10 Biology?
Understand the core concepts first, then work through the 44 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.

More resources for Transpiration

All 16 chapters — ICSE Class 10 Biology Chapter Summary

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