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What is Transpiration?

What is Transpiration?. Transpiration is the process by which the plant cools itself by releasing water from openings in its leaves called stomata. Stomata. Stomata are openings on the bottom side of plants’ leaves which release water to cool the leaves when needed.

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What is Transpiration?

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  1. What is Transpiration? • Transpiration is the process by which the plant cools itself by releasing water from openings in its leaves called stomata.

  2. Stomata • Stomata are openings on the bottom side of plants’ leaves which release water to cool the leaves when needed. • They are opened and closed by guard cells.

  3. When Do the Stomata Open? • The stomata open only when the air temperature is hot, during the daylight hours. • They do not open if the plant is water stressed.

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