Simple permanent tissues
Activity No # 1 -Observation of simple permanent tissues
Materials/ Resources needed
A piece of stem, blade, dissection needle, a microscope, glass slide, cover slip, glass dish, methylene blue, glycerine, blotting paper etc.
Prerequisites/Instructions, if any
Cut very thin sections of a soft stem and select a good section and observe it under microscope.Note the different types of cells you observe.
Process (How to do the activity)
- Cut a soft piece of a plant stem(shrub) of 1 to 2 inches in length.
- Take very thin sections(10 to 20) of the stem and place it in a glass dish with water.
- Select a very fine section 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)
- How many types of cells do you observe?
- Do the different types of cells differ in their structure?
- Why do they differ in structure?
- How many types of simple permanent tissues can you observe?
Evaluation (Questions for assessment of the child)
- How can you differentiate parenchyma from collenchyma cells?
- How can you differentiate sclerenchyma from collenchyma cells?
To link back to the topic page Plant tissues Back