What condition is described as the wilting of a plant when in isotonic conditions?

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Study for the Campbell Biology Test. Review key biology concepts with multiple choice questions, complete with hints and explanations. Prepare effectively for your exam!

The condition described as the wilting of a plant in isotonic conditions is referred to as flaccid. When a plant's cells are in an isotonic solution, the concentration of solutes inside the cells is approximately equal to that outside. In this state, there is no net movement of water into or out of the cells. As a result, the cells become flaccid, leading to a loss of turgor pressure, which is the pressure exerted by the fluid inside the central vacuole against the cell wall.

In a flaccid state, the plant may not have the rigidity typically associated with healthy, well-watered plants. This condition can lead to wilting because cell walls do not maintain their shape as effectively without sufficient turgor pressure. Turgid cells, on the other hand, are ideally what a plant needs for structural support, as water pressure within the cells causes them to press against the cell wall, keeping the plant upright.

The other terms refer to different conditions: turgid describes a healthy state with ample water, plasmolyzed refers to a condition where plant cells lose water and shrink away from the cell wall typically in hypertonic solutions, and hypertonic describes a solution with a

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