Question

Discuss role of transpiration pull in lifting water to the tops of tallest tree of the world

Answer 1

Hint: The diverse living world surrounding us is divided into two major groups: plants and animals. The plants provide us with our primary source for nutrition and keep balance in the atmosphere by taking up carbon dioxide during photosynthesis releasing oxygen in the exchange for it. Hence, a study of Biology is incomplete without a proper understanding of plants and their psychological processes.

Complete answer:
The process involving the loss of water from the aerial part of the plant especially from the leaves in the form of water vapor is called transpiration. Water is a necessity in all forms of water and plants. It is the roots that perform the function of acquiring water from the soil. However, the plants for growth and metabolism use a very small percentage of that water. The remaining amount of water which is almost 95 to 99% is lost via transpiration and guttation. The driving for that act in favor of transpiration is the difference in water vapor between the leaf air spaces and the external air. The higher is this difference in vapor pressure the more is the rate of transpiration. Transpiration can be divided into three types such as Cuticular transpiration, lenticular transpiration and stomatal transpiration.
Transpiration pull is a psychological process that can be defined as a force that works against the direction of gravity in plants due to the constant process of transpiration in the plant body. This force helped in the movement of water as well as the minerals dissolved in it to the upper parts of the plants. This movement of water takes place through the xylem, a dead tissue that is found throughout the length of plants. Transpiration pull can alternatively be described as a sectional force that pulls up the groundwater in an upward direction. The plants for photosynthesis utilize a very small percentage of that water, and the remaining is transferred into the atmosphere via water vapor.
Transpiration rates are also enhanced in the plant with young shoots. Transpiration, through accounts for a large amount of water loss from the plant body, aids in keeping the plant cool by evaporation, is the evaporating water vapor is carried away some heat energy giving to its large amount of latent heat of vaporization which is approximately 2260 KJ per liter. During transpiration, molecules of water get evaporated from the stomata as a result of this the concentration of water is lowered in the plants is a field cell resulting in the reduction of cells SAP of mesophyll compared to that of the xylem vessels. This causes the upward force that pulls the water from the roots to the mesophyll cells by creating a negative pressure in xylem vessels that aids in pulling off the water from the soil via the roots.

Hence the correct answer is OPTION()

Note: Transpiration pulls in the plant's consequences for the acceleration or evaporation of water that is lost from the surface measure fill cells present in the leaves. This process aids the proper territory flow of water and prevents the plant from creating an embolism. That is why, even though the plant loses water via this psychological process, it is also necessary for the plant's metabolism, in designing the process of transpiration as a ‘necessary evil’.