Answer
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Hint: Plants, like all living organisms, require an excretory system to expel excess water from their bodies. The process of removing excess water from the plant body is referred to as transpiration. The evaporation of water from the surface of the leaves is the most common cause.
Complete answer:
Water molecules in plant tissues are removed from the aerial parts of the plants during the transpiration process. Only a small portion of the water absorbed by plants is used for growth and development. The remainder is expelled through transpiration.
In plants, there are three types of transpiration:
• Stomatal Transpiration: It is the evaporation of water from the plant's stomata. The majority of the water from the plants is transpired in this manner. When the stomata open, the water near the surface of the leaves turns into vapor and evaporates.
• Lenticular Transpiration: Lenticels are tiny holes in the bark of branches and twigs. Lenticular transpiration is the process by which water evaporates from the lenticels of plants.
• Cuticular Transpiration: It is the evaporation of water from the plant's cuticle. The cuticle is a waxy covering on the surface of plant leaves. Cuticular transpiration accounts for 5-10% of the water lost by the leaves. More water is transpired through the cuticles during dry conditions when the stomata are closed.
The higher the temperature, the greater the rate of evaporation and, consequently, the greater the rate of transpiration! Thus, on an extremely hot day, the rate of transpiration will be High.
Note: The Importance of Plant Transpiration
• Transpiration aids in the transport of water and minerals to various parts of the plant.
• A water balance is maintained within the plant due to the continuous elimination of water from the plant body.
• It keeps osmosis going and the cells rigid.
• Transpiration generates a suction force, which aids in the upward movement of water in the plants.
• A tree's cooling effect is caused by the evaporation of water from its leaves.
Complete answer:
Water molecules in plant tissues are removed from the aerial parts of the plants during the transpiration process. Only a small portion of the water absorbed by plants is used for growth and development. The remainder is expelled through transpiration.
In plants, there are three types of transpiration:
• Stomatal Transpiration: It is the evaporation of water from the plant's stomata. The majority of the water from the plants is transpired in this manner. When the stomata open, the water near the surface of the leaves turns into vapor and evaporates.
• Lenticular Transpiration: Lenticels are tiny holes in the bark of branches and twigs. Lenticular transpiration is the process by which water evaporates from the lenticels of plants.
• Cuticular Transpiration: It is the evaporation of water from the plant's cuticle. The cuticle is a waxy covering on the surface of plant leaves. Cuticular transpiration accounts for 5-10% of the water lost by the leaves. More water is transpired through the cuticles during dry conditions when the stomata are closed.
The higher the temperature, the greater the rate of evaporation and, consequently, the greater the rate of transpiration! Thus, on an extremely hot day, the rate of transpiration will be High.
Note: The Importance of Plant Transpiration
• Transpiration aids in the transport of water and minerals to various parts of the plant.
• A water balance is maintained within the plant due to the continuous elimination of water from the plant body.
• It keeps osmosis going and the cells rigid.
• Transpiration generates a suction force, which aids in the upward movement of water in the plants.
• A tree's cooling effect is caused by the evaporation of water from its leaves.
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