Difference between revisions of "Dermal tissue"
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*Break the leaf by stretching it so that a peel of skin from the lower epidermis projects out.Remove 2 to 3 pieces of peel and place it in a glass dish with water. | *Break the leaf by stretching it so that a peel of skin from the lower epidermis projects out.Remove 2 to 3 pieces of peel and place it in a glass dish with water. | ||
*Select a very fine peel and place it on a glass slide. | *Select a very fine peel and place it on a glass slide. | ||
| − | *Add 1 to 2 drops of methylene blue on the | + | *Add 1 to 2 drops of methylene blue on the section and wash the extra stain with water. |
| − | * | + | *Add 1 to 2 drops of glycerine and cover the section with a cover slip gently and remove the extra stain with a blotting paper. |
*Mount the slide on the microscope. | *Mount the slide on the microscope. | ||
Revision as of 07:42, 4 August 2014
Activity No # 1 - Observation of dermal tissue
Estimated Time
30 minutes
Materials/ Resources needed
A Nerium leaf, a microscope, glass slide, cover slip, glass dish, methylene blue, glycerine, blotting paper etc.
Prerequisites/Instructions, if any
Peel out lower skin of nerium leaf and observe it under microscope.Observe few specialised structures and draw the diagram.
Multimedia resources
Website interactives/ links/ simulations
Process (How to do the activity)
- Take a nerium leaf.
- Break the leaf by stretching it so that a peel of skin from the lower epidermis projects out.Remove 2 to 3 pieces of peel and place it in a glass dish with water.
- Select a very fine peel and place it on a glass slide.
- Add 1 to 2 drops of methylene blue on the section and wash the extra stain with water.
- Add 1 to 2 drops of glycerine and cover the section with a cover slip gently and remove the extra stain with a blotting paper.
- Mount the slide on the microscope.
Developmental Questions (What discussion questions)
- Did you see some specialised structures in the slide?
- What are they called?
- what is the structure of stomata?
Evaluation (Questions for assessment of the child)
- What is the function of stomata?
- What is the function of guard cells of stomata?
Question Corner
To link back to the topic page Give the link of the page name from where activity was given Back