Tamil Nadu HSE First Year Biology case studies
Tamil Nadu HSE First Year Biology · Put your knowledge to work in context.
The Tamil Nadu Higher Secondary Certificate (HSE) First Year Biology paper is the Class 11 biology examination taken under the Tamil Nadu State Board, usually written at the end of the first year of the two-year higher secondary course. It suits students who have chosen the science group with biology and who intend to continue into Class 12 biology and then pursue medicine, veterinary science, agriculture, pharmacy, biotechnology, or pure life sciences. The Tamil Nadu HSE First Year Biology case studies are 5 cases and about 4,024 words.
1Herbarium Labels, Synonyms and the Rules of Nomenclature
A team of four Class XI students prepares a herbarium for the district science exhibition. Their labels read: (i) 'Tulsi - Ocimum sanctum Linn.'; (ii) 'Neem - Azadirachta indica A.Juss.'; (iii) 'Vallarai - Centella asiatica (L.) Urban'; (iv) 'a grass collected near the canal, name not known'.
751 words, about 4 min2Beetroot Discs and the Integrity of the Cell Membrane
A Class XI student cuts six beetroot discs of identical size (1 cm diameter, 2 mm thick) and rinses them in distilled water until no colour leaks out. She places one disc in each of six test tubes containing 10 mL of liquid: (A) distilled water at 30 °C; (B) distilled water at 60 °C; (C) 5% NaCl at 30 °C; (D) 5% NaCl at 60 °C; (E) distilled water at 30 °C with two drops of detergent; (F) 10% ethanol at 30 °C.
836 words, about 4 min3A Trekker at 3,500 Metres: Why Day 3 Was Worse Than Day 8
A 16-year-old boy from Chennai joins a ten-day trek with his school. At 1,200 m on day 1 his resting respiratory rate is 14 per minute, heart rate 72 per minute and SpO2 98%.
786 words, about 4 min4Blood Groups, a Miscarriage and a Second Pregnancy
A couple attends a district hospital. The woman is blood group B, Rh negative; her husband is group A, Rh positive.
797 words, about 4 min5Five Hydroponic Tanks and a Diagnosis from Leaf Symptoms
A school raises tomato seedlings in five identical hydroponic tanks under the same light, pH 6.0 and temperature, with roots aerated. Tank 1 receives full nutrient solution.
854 words, about 4 min