Observing stages of mitosis in cells theough permanent slide

 

Learning Objective

• Identify the stages of mitosis.

• Arrange the stages in the correct sequence.

• Understand the significance of mitosis in growth and repair.

Materials Required

• Prepared slide of onion root tip (or microscope images)

• Compound microscope (if available)

• Observation worksheet

• Stage cards (Prophase, Metaphase, Anaphase, Telophase)

• Colored pencils

Procedure

1. Observe the prepared onion root tip slide under the microscope.

2. Locate cells undergoing division.

3. Identify cells in:

• Interphase

• Prophase

• Metaphase

• Anaphase

• Telophase

4. Draw one cell representing each stage and label the chromosomes.

5. Arrange the stage cards in the correct order and explain what happens in each stage.

Movie day out class VII

 

Testing food samples for carbohydrates, proteins and fats

 

The food sample was tested for carbohydrates, proteins, and fats. The appearance of a blue-black colour with iodine confirmed the presence of starch. A reddish color in milk using milans reagent indicated the presence of proteins. Ethanol emulsion test confirmed the presence of fats.

The experiment successfully identified the major nutrients present in the given food sample using standard food tests. The colour changes and observations confirmed the presence or absence of carbohydrates, proteins, and fats.