Author: Padmini Garud

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 …

Active absorption of water

 Active absorption of water  When the water is absorbed due to the activity of root itself, particularly root hairs, it is called active absorption. Active absorption of water may …

Passive water absorption

Passive water absorption This theory explains that the forces responsible for absorption of water into the roots are governed by other cells.  In actively transpiring plants absorption of water …

Diffusion

Diffusion: Plant-water relations Diffusion is the movement of gas, liquid and solute molecules or ions from their region of higher concentration to the region of their lower concentration. The …

Osmosis

Osmosis Osmosis is the movement of solvent from a region of its higher concentration to a region of its lower concentration when the two are separated by a semipermeable …

Imbibition

Imbibition : Plant-Water Relations Imbibition is the absorption of water by the solid particles of an adsorbant without forming a solution . The particles which absorb water are the …

Plasmolysis in plant cell

 Plasmolysis Plasmolysis is the shrinkage of the protoplast of a cell from its cell wall under the influence of a hypertonic solution. If a plant is placed in highly …

Role of k+ in Stomatal Movement

 Role of k+ in stomatal movement: Imamura and M. Fujino (1959) found a direct correlation between stomatal movement and K+ ion concentration of guard cells. Fujino proposed that stomatal …