Water transport in plants occurs through a system of tissues known as xylem and phloem. Xylem is responsible for the transport of water and minerals from the roots to the rest of the plant, while phloem is responsible for the transport of sugars and other organic nutrients from the leaves to other parts of the plant.
The process of water transport in plants begins with the roots absorbing water and minerals from the soil through tiny root hairs. This water is then transported upward through the xylem vessels, which are made up of long, hollow cells called tracheids and vessel elements. These cells are arranged end-to-end to form a continuous network that allows water to flow upwards by capillary action.
As water evaporates from the leaves through small openings called stomata, a negative pressure is created, which causes water to be pulled up through the xylem vessels. This process, known as transpiration, creates a 'pulling force' that helps to maintain a continuous flow of water from the roots to the leaves.
In addition to transpiration, water transport in plants is also facilitated by a process called cohesion-tension. This process involves the cohesion of water molecules to each other, as well as the adhesion of water molecules to the walls of the xylem vessels. These forces help to maintain the continuity of water flow and prevent the water column from breaking.
Overall, water transport in plants is a complex and efficient process that allows for the movement of water and nutrients throughout the plant, supporting growth and metabolism.
Explain water transport process in plants
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