The Fundamental Unit of Life- Practical

The Fundamental Unit of Life 
Practical Class
" Whenever you feel sad, just remember that there are trillions of cells in your body & all they care about is you!!"

Thank you for logging in again.
At the end of this class, You will be able to:
  • Perform activities related to Plant and Animal Cells.
Happy Learning!!😊

Introduction

Plant and Animal Cell (Previous Knowledge Testing)

Note: More about Plant and Animal Cell will be discussed in detail in this chapter.

Refer to: 
  • Page No. 57 and 61 of the Textbook & read Activity 5.1 & 5.7. 
  • Experiment 5 of the Lab Manual (Practical Skill in Science class 9)- Slide of Onion Peel & Cheek Cells.

  • Procedure For Plant (onion) Cell:
  1. ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-2
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-3
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-4
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-5
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-6
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-7
    ncert-class-9-science-lab-manual-slide-of-onion-peel-and-cheek-cells-8
Procedure for the animal (Human Cheek) Cell:
  1. Make a dilute methylene blue solution in a watch glass.
  2. Keep a clean slide with a drop of distilled water in the middle of the slide.
  3. Take a clean/unused toothpick and scrap the inner wall of your mouth/cheek gently to obtain the epithelial animal tissue, (use the blunt side of a toothpick)
  4. Transfer the scrap on the middle of the glass slide and put a drop of methylene blue solution on it, to stain the cells.
  5. After 2-3 minutes place the coverslip gently on the cheek cell with the help of a needle and avoid the air bubble. (A drop of glycerine can be spread on the cheek cells, it is optional)
  6. With the help of blotting paper remove the extra stain/water present on the slide.
  7. Place the slide under a microscope and observe it.
Check the following video to know in detail how to prepare temporary mounts of plant and animal cells.

https://youtu.be/Twp381zHuTE (Onion and Cheek Cell Microscope Slide Experiment)

Observations:

I hope it helped!
See you for the next class!
Take care😊😊😊

Comments

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  3. Suryansh Sinha 9A April 20, 2020 at 10:47 AM

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