1. What should you use to collect pond or stagnant water for observation under a microscope?

2. Why should you not touch the soil with your bare hands when collecting soil for observation?

3. What is the recorded data for Amoeba (Protozoa)? Fill in the blank: Amoeba is a ________, moving, irregular shape.

4. Which microorganism is described as: 'Single cell, moves from one place to another, movement takes place with the help of specialised structures'?

5. Fill in the blank: Algae is a single cell, looks green because of the presence of ________, movement takes place with the help of specialised structures.

6. Which organism in soil suspension has a branched filament without chlorophyll and a sac-like structure?

7. Which organism in soil suspension has a branched filament without chlorophyll and a brush-like structure?

8. Which organism in soil suspension is spherical and contains chlorophyll—a green pigment?

9. Bacteria in soil suspension can be spherical, comma, spiral or rod-shaped, and have one long hair-like structure and many small hair-like projections around the cell.

10. Viruses are microscopic and acellular. They multiply when they enter a living cell.