Endodermal cells filter solutes from water and allow them to pass through to the vascular tissue.
Root pressure can move water a short distance up the xylem because of the lower water potential of the xylem in comparison to the water potential in the surrounding cells.
A sink is an area where sugars are used or stored; typically, these are the roots and fruits of a plant.
Water and minerals that are taken up in the soil are transported from roots to leaves by the xylem.
On a cloudy day with low soil moisture, the photosynthesis rate is low and stomata are closed, so the transpiration rate is low.
While the rate of photosynthesis and the difference in turgor pressure between the source and the sink do influence the rate of sugar transport in the phloem, the rate of transpiration does not; transpiration mainly influences the rate of water transport through the xylem.
The figure shows a structure of the root. The arrow indicates the channel between the cell from the outer layer of the root and the inner one.
(Water and ions can pass from cell to cell via these channels. Also, recall that plasmodesmata are a type of cell junction.)
Mycorrhizae are mutualistic associations of roots and fungi.
This is an animation of the movement of water and ions through the root ______.
The animation illustrates water and ions moving along a cell wall continuum.
The Casparian strip is a waterproof barrier that forces water and solutes to pass through the plasma membranes of endodermis cells.
Transpiration, the evaporation of water from leaves, exerts a pull that bears the primary responsibility for the movement of water and solutes from roots to leaves.
Hydrogen bonds among water molecules are responsible for the tendency of those molecules to stick together.
Guard cells regulate the opening and closing of stomata.