One day , Yash covered a Tulsi plant that was growing in his garden with a polythene bag. That evening he was surprised to see tiny droplets of water collected inside the bag. Where do you think this water came from?
Answers
Explanation:
Real Lab Procedure
Gently scrape the inner side of the cheek using a toothpick, which will collect some cheek cells.
Place the cells on a glass slide that has water on it.
Mix the water and the cheek cells using a needle and spread them.
Take a few drops of Methylene blue solution using a dropper and add this to the mixture on the slide.
After 2-3 minutes remove any excess water and stain from the slide using a blotting paper.
Take a few drops of glycerine using a dropper and add this to the test mixture.
Take a clean cover slip and lower it carefully on the mixture with the aid of a needle.
Using a brush and needle, press the cover slip gently to spread the epithelial cells.
Remove any extra liquid around the cover slip using a blotting paper.
Place this glass side on the stage of the compound microscope and view it.
Observations
A large number of flat and irregular-shaped cells are observed.
The cells do not have a cell wall. However, each cell has a thin cell membrane.
A deeply stained nucleus is observed at the centre of each cell.Real Lab Procedure
Gently scrape the inner side of the cheek using a toothpick, which will collect some cheek cells.
Place the cells on a glass slide that has water on it.
Mix the water and the cheek cells using a needle and spread them.
Take a few drops of Methylene blue solution using a dropper and add this to the mixture on the slide.
After 2-3 minutes remove any excess water and stain from the slide using a blotting paper.
Take a few drops of glycerine using a dropper and add this to the test mixture.
Take a clean cover slip and lower it carefully on the mixture with the aid of a needle.
Using a brush and needle, press the cover slip gently to spread the epithelial cells.
Remove any extra liquid around the cover slip using a blotting paper.
Place this glass side on the stage of the compound microscope and view it.
Observations
A large number of flat and irregular-shaped cells are observed.
The cells do not have a cell wall. However, each cell has a thin cell membrane.
A deeply stained nucleus is observed at the centre of each cell.
Explanation:
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