Question

How does transpiration help in upward transport of substances?​

Answer 1

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Answer

• Transpiration helps in upward transport of substances in plants by drawing water up from the roots. During transpiration, water evaporates through pores in the leaves called stomata. This creates a negative pressure in the leave that helps to move water up from the roots through the xylem.
• Transpiration is the loss of water in the form of water vapour from the aerial parts of a plant. ... As water evaporates from the leaves, a suction force is created. This force helps to draw more water up through the stem which causes the roots to absorb more water from the soil.