Evaporation in Plants
Roots of plants take a lot of water inside them. This water moves to the top to bottom of the leaves being used as water and source of mineral salts for photosynthesis.
This water stream moves in a regular way, therefore, most of the water becomes vapour which goes out through leaves. This process called evaporation. Around 2% of the absorbed water in root is used in the process of photosynthesis.
1. Making environment cool - conversion of water into vapors gives coolness. Plants evaporate more in heat and summer. Therefore, more water is required in the plants in summer otherwise plants get dried out.
2. Distribution of water - leaves are the end point of plant. Therefore water is required to reach every part of plants. In this way water is used as water when required by plant and its parts.
3. Distribution of minerals - when we move roots to the top level of pants then minerals are absorbed by them. When leaves do evaporation then the element inside them becomes thick and pulls more minerals from bottom. Therefore, all the nutrients reach from one cell to another from top to bottom.
4. Removing excess of water - the process of evaporation vapourise the extra water present inside the plant.