Notes on Transpiration:- 1. Meaning of Transpiration 2. Factors Affecting Transpiration 3. Factors Controlling 4. Significance. Meaning of Transpiration: If a bell jar is placed on a pot, a film of moisture appears on its dry inner surface indicating loss of water as vapours which condense on the cool inner surface of the bell jar. The loss of water from [...]
The following points highlight the seventeen experiments on process of transpiration in plant cell. Some of the experiments are: 1. Determination of Stomatal Frequency (Or the Number of Stomata per Unit Area) of a Leaf 2. Measurement of Stomatal Pore 3. Determination of Changes of Stomatal Opening in Light, Dark and Under Desiccation 4. Effect of pH on Stomatal Opening [...]
The following points highlight the four factors affecting stomatal movements in plant cells. The factors are: 1. Light 2. Carbon Dioxide Concentration 3. Temperature and 4. Water Deficits and Abscisic Acid. Factor # 1. Light: Light has strong controlling influence on the stomatal movements. Stomata generally open in light and close in darkness. The amount of light required to achieve [...]