Page 9 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

“Well, don’t you know that the body of all organisms are made up
of cells? Let's observe the cells in the root of plantain through this
microscope. Don’t you remember having observed onion cells?
Similarly arrangements should be made to observe the cells in the
root of plantain. All required materials are there in this box. Who
will do this?”

“I’ll do Madam”, Manu came forward enthusiastically.
He took the section of the root using a blade, placed it on a slide and
observed it through the microscope...

Nothing could be seen! Then he turned the knob of the microscope.
Feeling disappointed he said,

“No Teacher. Nothing is visible”.

Why were Manu’s attempts a failure? Can you help him? For this,
you must know how to operate a microscope and prepare materials
for observation.
Let's familiarise ourselves with the microscope. Observe the
microscope with the help of your teacher and identify the
following parts and their use.

Eyepiece Knob Objective lens
Stage and clip Condenser Mirror

Fig. 1.1
Compound microscope
8 Basic Science VIII