In this article we will discuss about:- 1. Meaning of Stomata 2. Types of Stomata 3. Distribution 4. Daily Periodicity 5. Diffusive Capacity 6. Dynamic 7. Mechanism 8. Aspects of the Physiology of Stomatal Opening. Contents: Meaning of Stomata Types of Stomata Distribution of Stomata Daily Periodicity of Stomatal Movements Diffusive Capacity of Stomata Dynamic of Stomata Mechanism of Stomatal [...]
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 [...]
In several plants the root pressure is manifested as guttation which is the exudation of droplets of water from the margin and tips of leaves (Fig. 8-1). The exudation takes place through groups of leaf cells called hydathodes. The energy involved in secretion of water is supplied by these glandular cells themselves. In a leaf when the general surface is [...]