Question

Flaccid cell means
(a)Cell with turgidity
(b)Plasmolysed cell
(c)The cell in which water flows in and out of the cell
(d)The cell kept in a hypertonic solution

Answer 1

Hint: Cells are the fundamental unit which is membrane-bound. Some cells acquire specialized functions as mature. The cells are much larger than the atoms but are still very small. Cells are made up of some major organic molecules such as proteins, carbohydrates, lipids, and nucleic acids.

Complete answer:
Flaccid cell means the cell in which the water flows in and out of the cell and is in equilibrium. In a flaccid Cell, the plasma membrane is not pressed tightly against the cell wall and it can be observed by putting the plant cell in the isotonic solution. It is the solution where the concentration of solutes is the same as the outside and inside of the plant cell. A cell becomes flaccid when it is put in a hypotonic solution and it takes up the water by osmosis by which it starts to swell. The cell wall prevents it from rusting and the plant cell is placed in a hypertonic solution where the water from inside the cell diffuses out. This way the plant cell is said to have become flaccid.

Additional Information: Cell with turgidity: Turgidity is the state of being turgid or swollen due to the high fluid content of the cell. It occurs when the cells are placed in a hypotonic solution and are caused by osmosis. The cells get swollen due to the water uptake. The cells in a different organism can become turgid due to water uptake. This is caused due to the pressure exerted by the osmotic flow of water. This is through the selectively permeable membrane. In plants the water moving from low concentration solute to the outside of the cell into the cell's vacuole.
Plasmolysed cell: Plasmolysis is the loss of water from the plant cell after being placed in a solution that has a higher concentration of solutes than the cell. The solution is known as a hypotonic solution. It causes the protoplasm and all the materials inside the cell to shrink away from the cell wall. This makes the gap between the cell wall and the membrane which makes the plant cell shrink and crumple.
So, the correct answer is 'the cell in which water flows in and out of the cell'.

Note: Vacuoles in the plant cell provide turgidity to the plant cell and are different from the solution of cytoplasm as it contains stored food, waste materials, and enzymes. De Vries discovered plasmolysis which was determined under a plant’s turgor pressure using the hypotonic solution. Plasmolysis can be seen in the wilting of flowers as they kept out of water for some time.