What is osmosis and define absorption of water in plants?
Answers
Osmosis is the movement of water from an area of higher concentration to an area of lower concentration. Active absorption occurs through osmosis, or the use of active transport, to move molecules of solute in order to change the water concentration gradient, forcing water into the cells of the root hairs.
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WHAT IS CALLED OSMOSIS?
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration.
The fluids move from a region of higher concentration to a region of high concentration to a region of low concentration.
HOW PLANTS PERFORMS TRANSPORTATION?
Plants have specialise complex-conducting tissue in them for transportation of food, water and material in their body known as vascular tissues.
Vascular Tissue is of two types :-
1. Xylem
It helps in conducting water and minerals from soil to other parts of the plant.
2.Phloem
It helps in transportation of food and material to required region of the plant.
HOW WATER IS ABSORBED IN PLANTS?
Roots are underlying parts of plants which found in soil, the soil provides water and mineral for growth as well as for photosynthesis of the plant.
These roots have tiny poor which is connected to xylem vessels which absorbs water and minerals but for upward movement of water certain force is required. That suction force is exerted by transpiration in leaves of plant.
TRANSPIRATION is the lose of water in leaves due to presence of small openings present in them called stomata.
That provides suction pull of water from roots to leaves through xylem against the force of gravity.