A normal plant cell holds water in the vacuole of the cell. This large organelle also gives the cell support. Suppose a plant is
submerged in salt water. As a result, the vacuoles collapse and the leaves wilt. This condition is called plasmolysis. Which explanation do you think best describes what happens to the cells of that plant during plasmolysis? The water diffuses out of the cell to equalize the solute concentrations.
The water diffuses into the cell to equalize the solute concentrations.
The solute (salt) moves inside the cell to equalize the solute concentrations.
The solute (salt) pushes on the vacuole of the plant cell causing it to collapse.
Correct Answer: A. The water diffuses out of the cell to equalize the solute concentrations.
Explanation: When the plant is submerged in salt water, the solute (salt) concentration is greater outside the cell membrane than inside. In order to reach equilibrium, water diffuses out of the cell to equalize the solute concentration.
A diferencia de la materia, la energía no puede ser reciclada en un ciclo en los ecosistemas. En cambio, su flujo a través de ellos es una vía de un solo sentido, generalmente, de luz a calor.