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The roots of the plant absorb water and nutrients from the soil. The xylem, a type of tissue in the plant, carries these materials upward from the roots to the rest of the plant, including the stem, leaves, and flowers.
xylem
The roots of a plant are composed of three primary tissue systems: the dermal tissue system, which covers the outer surface of the root; the ground tissue system, which provides support and storage for the root; and the vascular tissue system, which is responsible for transporting water and nutrients throughout the root.
The xylem tissue in the plant is responsible for conducting water from the roots to the rest of the plant through a process called transpiration.
When a root develops from a stem or leaf tissue instead of root tissue, it is said to be adventitious. Adventitious roots often form in response to stress or when a plant needs additional support or water uptake.