Life Science for Home Science — DU B.Sc. (Hons.) Home Science Previous Year Question Papers

Answer four questions in all, two questions from each section. Use separate answer sheets for section A and section B. 1. Write short notes on any five of the following : 5x3=15 (b) Epigeal germination (c) Climate Smart Agriculture (d) Double fertilisation (e) Agrobacterium mediated gene transfer f Auxin i l (a) Elaborate the method of approach grafting with principle, precautions and well, labelled diagram. 10 (b) Explain briefly the application of biotechnology in agriculture crops. 5 (a) Write scientifiè name, parts used and uses of the following plants : (i) Lemon grass . - (iii) Sal (u) Mango spel (b) Explain the role of plants in air pollution control. 5 4. Write short notes on any two briefly : 2x7.5=15 5. (a) Describe the structure and function of an animal cell, focusing on its key components.: - 10 (b) Explain in detail the roles of the nucleus and chromosomes within the cell. 5 (a) Explain genetic diseases and discuss the importance of genetic counselling in preventing and managing these disorders. 10 (b) Explain Sickle Cell Anemia. Discuss its genetic cause and impact on human health. 5