Week 2: Absorption and translocation of water. Stomata regulation.

The movement of water and minerals right from the soil to the xylem of the roots through root hairs, epidermal cells, cortax cells and endodermal cells by adopting the apoplast pathway, symplast pathway and vacular pathway by mean of active and passive transport in context of water relation equation is called root absorption.

The movement of water from the xylem of the root through the xylem of stem to the xylem of leaf by mean of root pressure and transpiration pull is called translocation  or conduction of water.

Stomata is a pore surrounded by a guard cells. Stomata is a self regulatory structure that may be open or close to a various extent, based upon the atmospheric conditions. Actually guard cells is a multisensory hydrolic valves which sense the atmospheric conditions (light, temperature,  humidity, availability of soil water and wind) and act accordingly become turgid by absorbing the water from subsidary and epidermal cells and to open  the stomata and vice versa.

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regulation-of-stomata-ppt.pptx (1.06 MB )

absorption-of-water-in-plants-ppt.pptx (0.61 MB )

absorption-of-water-by-active-transport.docx (1.00 MB )

regulation-of-stomata.docx (0.58 MB )