The cell is regarded as a fundamental structural and functional unit of life because the basic structure of all the living organisms is made up of cells. Hence cell is known as the structural unit of life.
Rhoeo Leaf Experiment:
Solution:
Mount the peel of a Rhoeo leaf in water on a slide.
Examine cells under the high power of a microscope.
Note the small green granules, called chloroplasts.
Put a strong solution of sugar or salt on the mounted leaf on the slide.
Observe it under a microscope to see onion cells.
Now place some Rhoeo leaves in boiling water for a few minutes. This kills the cells.
Put a strong solution of sugar or salt on the mounted leaf on the slide. Wait for a minute and observe it again.
Cheek Cell Experiment:
Solution:
Take a glass slide with a drop of water on it.
Using an ice-cream spoon gently scrape the inside surface of the cheek.
With the help of a needle we can transfer this material and spread it evenly on the glass slide kept ready for this.
To colour the material we can put a drop of methylene blue solution on it.
