Protection against evaporation

Principle

Plants are continually losing water on their surface through evaporation. This process is called Transpiration. As a result of transpiration plants lose substantial amounts of water which must be replaced by gaining water. If plants are unable to gain sufficient water they fade and die. Many plants or prts of plants have special protective devices to check transpiration.

Benefits

• Experiment is part of a complete solution set with a total of 44 experiments for botany, reproduction, soil, food and digestion, senses, physiology.

• With student worksheet, appropriate for all class levels.

• With detailed instructor information.

• Optimized for tight schedules, i.e. minimum preparation time required.

• Biology solution set specifically designed to include all required accessories.

Tasks

Compare the amount of water lost by an unpeeled and a peeled potato.