In this article we will discuss about:- 1. Meaning of Ascent of Sap 2. Rate and Amount of Ascent of Sap 3. Theories. Meaning of Ascent of Sap: The upward movement of water from the root to the top of the plant is called as ascent of sap. Plants absorb water through the roots and transpire through leaves. The water [...]
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 [...]
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 [...]