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 […]
Guttation in Plants | Plant Physiology
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Stomata: Meaning, Types and Mechanism | Plant Physiology
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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 […]
Notes on Transpiration: Meaning, Factors and Significance
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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. […]
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