Micro organisms in water in Living with Non-Living – Class 6 Science Experiment

Chapter Name: Living with Non-Living

Activity Name: Micro organisms in water in Living with Non-Living

Activity Description:

In this experiment, you will collect water samples from different sources such as a pond, well, and bore well. By observing these samples under a microscope, you will determine the presence and types of microorganisms in each water sample. Additionally, you will compare the abundance and appearance of microorganisms in pond water and bore well water.

Required Items:

1. Microscope
2. Slides
3. Coverslips
4. Water samples from a pond, well, and bore well

Step by Step Procedure:

1. Collect water samples from a pond, well, and bore well, ensuring that each sample is kept separate.
2. Place a drop of one of the water samples onto a microscope slide.
3. Carefully place another slide on top of the water drop to create a sandwich-like structure with the water in between.
4. Place the prepared slide on the microscope stage.
5. Adjust the microscope to a suitable magnification and focus on the water sample.
6. Observe the slide under the microscope and note the presence and types of microorganisms you see.
7. Repeat steps 2-6 for the other water samples.
8. Make drawings of the observed microorganisms, paying attention to their shapes and structures.
9. Compare the microorganisms present in each water sample and note any differences in their appearance.

Experiment Observations:

• Identify and record the types of microorganisms observed in each water sample.
• Note if all water samples contain the same types of microorganisms or if there are differences.
• Determine if any water sample is devoid of microorganisms.
• Compare the abundance of microorganisms in the different water samples.

Precautions:

1. Handle the microscope and slides with care to avoid damage.
2. Use clean slides and coverslips to prevent contamination.
3. Avoid touching the glass surfaces of the slides and coverslips to maintain clarity.
4. Ensure the microscope is properly focused to obtain clear observations.
5. Dispose of the water samples properly after the experiment to prevent contamination.

Lesson Learnt from Experiment:

1. Microorganisms are present in various water sources, such as ponds, wells, and bore wells.
2. Different water sources may contain different types and abundance of microorganisms.
3. Not all water samples may have the same types or quantity of microorganisms.
4. Some water sources may be devoid of visible microorganisms, while others may contain a larger number of them.
5. Microorganisms can have diverse shapes and structures, which can be observed under a microscope.