Video Transcript
What is the transport vessel that
moves water from roots to leaves in the plant?
In a plant, there are two types of
transport vessels: xylem and phloem.
Xylem carry water upward from the
roots toward the rest of the plant for hydration and to the leaves where water is
needed for photosynthesis to occur. There is no pump that propels the
water upward. Instead, the water is pulled upward
by transpiration. As water is evaporated from the
leaves of a plant during transpiration, that provides space for other water
molecules to take their place. As the water molecules move to take
up the space, the water molecules behind them move as well all the way down the
plant so that essentially the water is being sucked upward like water through a
straw.
The phloem carries fluids
containing sugars produced in the leaves during photosynthesis in any direction,
upwards or downwards, to nourish other parts of the plant.
This question asked specifically
about the vessel that carries water from roots to leaves. That would be the xylem. The transport vessel that moves
water from roots to leaves in the plant is the xylem.
