12th Biology Practical Book Solution 7. Study of water samples collected from different water bodies for their pH, clarity and presence of living organisms (microscopic/ planktonic). November 15, 2025 0
12th Biology Practical Book Solution 6. Study of suspended particulate matter in air at the two widely different sites, in your area. November 14, 2025 0
12th Biology Practical Book Solution 5. Study of soil samples at least from two different localities/ sites with respect to their texture and pH and correlate plants found thereof. November 13, 2025 0
12th Biology Practical Book Solution 3. Study of structure and distribution of stomata on upper and lower surfaces of leaf. November 11, 2025 0
