define transpiration pull
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Answer:
A transpiration pull could be simply defined as a biological process in which the force of pulling is produced inside the xylem tissue. This force helps in the upward movement of water into the xylem vessels. In this process, loss of water in the form of vapours through leaves are observed.
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A process in which the moisture and other gaseous wastes are excreted through the stomata of the leaf, lenticels of the stem and fruits are termed as Transpiration. In this process, the water absorbed by the root tips are excreted out into the atmosphere by the leaves and stems of respective plants to keep the plants cool and to allow the root to absorbs more water and other important nutrients from the soil. Light, humidity, temperature, wind and the leaf surface are the factors affecting the rate of transpiration in plants.