Question

what is transpiration ? ?​

Answer 1

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Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.

Answer 2

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$\sf{\underline{\overline{\pink{Transpiration :}}}}$

Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.

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$\boxed{\text{More to know :}}$

$\sf{\underline{\overline{\orange{Types \: Of \: Transpiration :}}}}$

There are three different types of transpiration in plants:

✦ Stomatal Transpiration

• It is the evaporation of water from the stomata of the plants. Most of the water from the plants is transpired this way. The water near the surface of the leaves changes into vapour and evaporates when the stomata are open.

✦ Lenticular Transpiration

• Lenticels are minute openings in the bark of branches and twigs. Evaporation of water from the lenticels of the plants is known as lenticular transpiration.

• Lenticels are not present in all the plants. A minimal amount of water is lost through lenticels.

✦ Cuticular Transpiration

• It is the evaporation of water from the cuticle of the plants. The cuticle is a waxy covering on the surface of the leaves of the plants. About 5-10% of the water from the leaves is lost through cuticular transpiration. During dry conditions when the stomata are closed, more water is transpired through the cuticles.