dilluns, 9 de març del 2015

L13: Epidermis cells

Objective:

- Identify the shape of epidermis cells
- Identify and explore the parts of a stoma
- Mesure dimensions of the entire cell and the stoma

Material:

- Slide
- Cover Slip
- Distilled water
- 10% salt water
- The kit:  scissors, needle, forceps
- Leek

Procedure:

plant cells observation: 

1- cute the stalk of the leek.
2- In the place of the cut, pull out transparent part of the epidermis using forceps.
3- Using needle, place the peel onto the slide containinga drop of tap water.
4- Take a cover slip and place it gently on the peel with the aid of needle.
5- View it in the microscope.
6. Describe the change in the shape of the cells.

salt treatement:
1- Prepare a 10% of salt solution.
2- Put the salt with a dropper on the left part of the slide (touch the cover slip)
3- Place a piece of cellulose paper in the opposite part of the cover slip, and let the dissolution to go through your sample.

leek with distilled water

leek with the salt treatement


















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