Pathways of water : Apoplast and Symplast pathways
Pathways of water movements in roots: Apoplast and Symplast pathways Water from the soil comes into the plant mostly through root hairs in the piliferous layer of the root. …
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 …
Opening and Closing of Stomata
Mechanism of opening and closing of stomata Stomatal transpiration occurs when stomata are fully open. The opening and closing of stomata is a direct response to increase or decrease …
Transpiration
Transpiration Transpiration is the process of loss of water in the form of vapours from the aerial portions of the plant. Less than 5% of total water absorbed by …