Difference between revisions of "Simple permanent tissues activity1"
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==Materials/ Resources needed== | ==Materials/ Resources needed== | ||
| − | A piece of stem, blade, dissection needle, a microscope, glass slide, cover slip, glass dish, | + | 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== | ==Prerequisites/Instructions, if any== | ||
| Line 16: | Line 16: | ||
*Take very thin sections(10 to 20) of the stem and place it in a glass dish with water. | *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. | *Select a very fine section and place it on a glass slide. | ||
| − | *Add 1 to 2 drops of | + | *Add 1 to 2 drops of methylene blue on the section and a drop of glycerine. |
*Cover the section with a cover slip gently and remove the extra stain with a blotting paper. | *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. | ||
| + | |||
==Developmental Questions (What discussion questions)== | ==Developmental Questions (What discussion questions)== | ||
#How many types of cells do you observe? | #How many types of cells do you observe? | ||
Latest revision as of 19:05, 1 August 2014
Activity No # 1 - Observation of simple permanent tissues
Estimated Time
30 minutes
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.
Multimedia resources
Website interactives/ links/ simulations
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 a drop of glycerine.
- 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?
Question Corner
To link back to the topic page Give the link of the page name from where activity was given Back