1. Food Testing & Biochemical Analysis | Starch test using iodine, Benedict’s test for sugar, Biuret test for protein, and importance of sample preparation in food tests. 2. Photosynthesis Investigation | Measuring oxygen production to determine photosynthesis rate, effect of different light wavelengths, and designing experiments for light intensity. 3. Data Handling & Graphing | Recording and analyzing experimental results, calculating mean values, constructing bar charts, and interpreting trends in photosynthesis. 4. Biological Drawing & Measurement | Observing insect morphology, drawing biological diagrams, measuring specimens, and using keys for species identification. 5. Practical Skills & Experimental Design | Controlling variables, ensuring reliability, maintaining apparatus cleanliness, and justifying methodological choices in biological experiments.