Difference between revisions of "Complex permanent tissue"
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| − | [http://karnatakaeducation.org.in/KOER/en/index.php/''' | + | [http://karnatakaeducation.org.in/KOER/en/index.php/Organisation_of_cells_plant_tissues'''Plant tissues''' Back] |
Latest revision as of 10:33, 27 August 2014
Activity No # 1 - Observation of xylem and phloem
Estimated Time
30 minutes
Materials/ Resources needed
A stem of a soft plant,blade,dissection needle,glass dish,safranin,cover slip,microscope etc.
Prerequisites/Instructions, if any
Observe the section carefully and try to identify xylem and phloem tissue and draw the picture of the same.
Multimedia resources
Website interactives/ links/ simulations
Process (How to do the activity)
- select a piece of stem of a soft plant.
- Cut very thin sections of the stem(10 to 20) and place them in a glass dish with water.
- Select a fine section and transfer it to a glass slide.
- Add 1 to 2 drops of safranin 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 and observe carefully.
Developmental Questions (What discussion questions)
- Name the different types of cells you observed?
- Did you identify xylem and phloem cells?
- Where are they situated?a.At the center. b.Intermediate. c.On the outer layer.
Evaluation (Questions for assessment of the child)
- What is the structure of xylem as you observed?
- What is the structure of phloem as you observed?
- How are they arranged in the stem?
Question Corner
To link back to the topic page Plant tissues Back