Powerpoint lecture covering the following in a modern, concise format:

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 Lectures are available.