Question

The osmotic potential of a plant refers to the

A) force exerted outward on a cell wall by the water contained in the cell.
B) surfaces of larger molecules, such as those in the cell walls, exerting an attractive force on water.
C) association between concentrations of solutes in cells and the rate of water loss.
D) ratio of carbon fixed (photosynthesis) per unit of water lost (transpiration).

Answer 1

The osmotic potential of a plant refers to the solute potential or osmotic potential of a plant cell. It is related to the solute concentration in the cell and is a measure of the potential energy available in the water. The osmotic potential and turgor pressure play important roles in supporting plant cells and maintaining their water balance.

Step-by-step explanation:

The osmotic potential of a plant refers to the solute potential or osmotic potential of a plant cell. It is related to the solute concentration in the cell and is a measure of the potential energy available in the water. As solutes are added to an aqueous system, the available potential energy decreases, resulting in a negative solute potential. This causes water to move into the plant cell via the process of osmosis.

This osmotic entry of water raises the turgor pressure exerted against the cell wall, which is the main cause of support in many plants. The cell wall helps maintain the cell's water balance and prevents the cell from either bursting or shrinking. The turgidity of the plant cell also allows for rigidity and structural support in the plant.