With the help of an activity, show the presence of microorganisms in air
Answers
Answer:
by pasting the oil paper in any upper place
Explanation:
the paper turn to any colour or dust particals on it
Aim To show the presence of microorganisms in moist soil.
Materials Required
Garden soil, water, glass rod, filter paper, slide, beaker and microscope.
Theory
Organisms that are visible only through a microscope are called microorganisms. They vary in shape, size and characteristics that either makes them helpful or harmful to human beings.
Procedure
(i) Take some garden soil in a beaker and add a little water to it. Mix it well with glass rod .
(ii) Filter the solution with the help of a filter paper.
(iii) Collect a drop of the filtrate on a glass slide and then observe it under a microscope. Observations Small organisms can be observed floating in the drop of soil sample.
Conclusion
Moist soil contains microorganisms. Precaution (1) While handling soil samples you must wear gloves.
(ii) Wash your hands properly after the experiment.
hope it helps
✌️｡◕‿◕｡