Question

Fig -3(a) Rheo leaf peel cells with memberane
Plasma
membrane
Cell Walls
Shrunken
Cytoplasm
Fig-3(b) Cell membrane
• Observe it under microscope. Draw
your observation in your note book.
• Compare the observations of both
activities or fig-3(a) and 3(b) and
note down the differences?
• Can you guess the reason for the
differences? ​

Answer 1

Answer:

Plasmolysis is the process during, which cells lose water when placed in a hypertonic solution, that is greater in the concentration of solutes compared with the inside of a cell. During plasmolysis, the organelles inside the cell shrink away from the cell wall, which results in severe water loss and leads to the collapse of the cell wall and finally results in cell death.

Osmosis is primarily responsible for the occurrence of plasmolysis. There are three stages in plasmolysis. Based on certain criteria, plasmolysis can be classified into two different types:

Concave plasmolysis – It is a reversible process.

Convex plasmolysis- It is an irreversible process.

Also Refer: Plasmolysis

Stages of Plasmolysis

Let us perform a simple experiment to study in detail about the process of plasmolysis in the plant cell