Companion PDF worksheet for Edexcel IGCSE Biology Lecture 22 - Transpiration. Contains short answer questions, an activity requiring lateral thinking and exam-style questions.
Specification Point 2.55B - Understand how water is absorbed by root hair cells.
Specification Point 2.56B - Understand that transpiration is the evaporation of water from the surface of a plant.
Specification Point 2.57B - Understand how the rate of transpiration is affected by changes in humidity, wind speed, temperature and light intensity.
Specification Point 2.58B - Practical: investigate the role of environmental factors in determining the rate of transpiration from a leafy shoot.
Complete set of Chapter 3 Worksheets are available.
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