Mineral elements and Plant Nutrition
Mineral elements and Plant Nutrition Elements derived from soil are termed as mineral elements. Mineral nutrition is the study of source, mode of absorption, distribution and metabolism of various inorganic …
Deficiency Symptoms of Mineral Elements in Plants
Deficiency Symptoms and Role of Mineral Elements in Plants Deficiency symptoms are externally visible pathological conditions caused due to the deficiency of some essential mineral elements. The deficiency of an …
Nitrogen Fixation
Nitrogen fixation The process of conversion of free nitrogen of the atmosphere into utilisable compounds of nitrogen such as nitrate, ammonia, amino acids etc is termed as nitrogen fixation. …
Mechanism of Biological Nitrogen fixation
Mechanism of biological nitrogen fixation The mechanism of biological nitrogen fixation follows different pathways for free living or asymbiotic and symbiotic systems. However in both the systems, the molecular …
Active Salt Absorption
Active mineral salt absorption The absorption of ions, involving use of metabolic energy is termed as active salt absorption. Energy used in this mechanism comes from metabolic activities, especially …
Mineral salt absorption
Mineral salt absorption Plants absorb mineral salts from the soil through the roots. The zones of elongation and the root hairs are responsible for the mineral salt absorption. They …
Guttation
Guttation The process of exudation of liquid droplets from the margin and apex of the leaves of herbaceous plants is termed as guttation. It was first studied by Bergerstein …
Factors Affecting The Rate of Transpiration
Factors affecting the rate of transpiration Many environmental factors, such as intensity of light, temperature, atmospheric humidity, wind, availability of soil water, etc., greatly affect the rate of transpiration. …
Water potential
Water potential: Water potential is the difference between free energy of water in a system and the free energy of pure water at atmospheric pressure and a defined temperature. It …
Availability of soil water for plants
Availability of Soil water: The source of soil water is rain. Soil is the main reservoir of water for plants. The amount of water in soil is variable, which depends …