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Hint: The mechanism of transpiration in plants contains the functional and structural units of the plant which perform various functions for the growth and reproduction of the plant.
Complete answer : Transpiration is defined as the process of elimination of water by evaporation in the plants. Then, it enters into the atmosphere and becomes a vital part of the water cycle. The process of transpiration is the important procedure in plants. It creates a negative pressure gradient. Transpiration generally occurred through stomata (that found in epidermis of leaves and controls rate of gas exchange). The process of transpiration is affected by a number of factors which include: light, temperature, humidity and wind speed. The plant factors that affect transpiration includes: number of stomata open, number and distribution of stomata, canopy structure etc. Three types of transpiration:
(1) Stomatal transpiration
(2) Lenticular transpiration
(3) Cuticular transpiration.
Transpiration mainly takes place through the surface of leaves and also known as Foliar transpiration. Transpiration occurs through mature stems and is called Cauline transpiration. When transpiration occurs in soft parts of plants like flowers is called stomatal transpiration. So, mechanisms of transpiration in plants are performed in stem, all leaves and flowers.
Thus, the correct answer is option D. i.e., All of the above.
Note: Like all the living organisms, plants also require an excretory system to eject excess of water from their body. Though large quantities of water are absorbed by the roots from the soil, only 2-5% of it is utilized and 92-98% loss in the process which is called transpiration. Transpiration plays a vital role in the plants because if excess water is not removed from the plants, then this water gets stored in the plant cells and the cells will burst out.
Complete answer : Transpiration is defined as the process of elimination of water by evaporation in the plants. Then, it enters into the atmosphere and becomes a vital part of the water cycle. The process of transpiration is the important procedure in plants. It creates a negative pressure gradient. Transpiration generally occurred through stomata (that found in epidermis of leaves and controls rate of gas exchange). The process of transpiration is affected by a number of factors which include: light, temperature, humidity and wind speed. The plant factors that affect transpiration includes: number of stomata open, number and distribution of stomata, canopy structure etc. Three types of transpiration:
(1) Stomatal transpiration
(2) Lenticular transpiration
(3) Cuticular transpiration.
Transpiration mainly takes place through the surface of leaves and also known as Foliar transpiration. Transpiration occurs through mature stems and is called Cauline transpiration. When transpiration occurs in soft parts of plants like flowers is called stomatal transpiration. So, mechanisms of transpiration in plants are performed in stem, all leaves and flowers.
Thus, the correct answer is option D. i.e., All of the above.
Note: Like all the living organisms, plants also require an excretory system to eject excess of water from their body. Though large quantities of water are absorbed by the roots from the soil, only 2-5% of it is utilized and 92-98% loss in the process which is called transpiration. Transpiration plays a vital role in the plants because if excess water is not removed from the plants, then this water gets stored in the plant cells and the cells will burst out.
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