Question

A plant cell becomes turgid when placed in

• A. 100% water.
• B. 10% sugar solution.
• C. 10% salt solution.
• D. None of the above

Answer 1

The correct option is A

100% water.

The correct option is A:

Explanation of the correct option

1. Water will flow within the cell if the solution around it is less concentrated (hypotonic) than the cytoplasm, causing the cell to enlarge and possibly burst (in some cases).
2. Water will migrate outside the cell if the solution around it is more concentrated (hypertonic) than the cytoplasm.
3. There will be no net flow of water if the solution surrounding the cell has the same concentration as the cytoplasm.
4. When a regular plant cell is submerged completely in water. Endosmosis will occur in the solution with a lower solute content. The plant cell becomes turgid as a result of the water movement.
5. When a plant cell is immersed in 100 percent water, it absorbs water by osmosis and begins to swell, but the cell wall stops it from bursting. As a result, the plant cell is said to become "turgid."

Explanation of the incorrect options

Option B:

1. Exosmosis causes plant cells to lose water and become flaccid; this is the exact opposite of turgid, and the contents of the cells have shrunk and pulled away from the cell wall: they are plasmolyzed.

Option C:

1. Salt water is a hypertonic solution in comparison to plant cells, and water inside the plant cells will diffuse out of the cells via osmosis to reduce the salt solution's concentration. The turgor pressure inside the cells will be reduced, and the cells will wilt.

Option D:

1. The correct option is A: 100% water.

A plant cell becomes turgid when placed in 100% water.