Paper : ICSE Class XII Important Questions : Biology (2009)

Q. 1. Describe the path of ascent of sap due to transpiration pull.What were the objections raised against this theory and how was it rectified. [6]

Q. 2. Describe cytochrome pump theory for active absorption of minerals. [5]

Q. 3. Describe the life cycle of filarial parasite. [6]

Q. 4. Describe the basic postulates of the Neo Darwinians. [6]

Q. 5. Describe Cardiac Cycle. [6]

Q. 6. Describe the histological structure of various digestive glands. [6]

Q. 7. Give an account of the Tunica Corpus Theory. [3]

Q. 8. What are Darwin’s finches.What important conclusion was drawn from their studies. [5]

Q. 9. Describe Miller Urey’s Experiment. [5]

Q. 10 Describe the process of hybridization. [6]

Q. 11. Write in detail about CT Scan and MRI? Which is safer and why. [8]

Q. 12. Describe Calvin Cycle with schematic representation. [7]

Q. 13. Give the functions of auxins. [3]

Q. 14. What is counter current mechanism.Explain in brief . [4]

Q. 15. Describe the various organs of male reproductive system. [8]

Q. 16. Explain sliding filament theory and the chemical events during muscle contraction. [6]

Q. 17. What are the advantages of using bio-fertilisers [2]

Q. 18. Give an account of process of urine formation and its hormonal control. [6]

Q. 19. State Cope’s Law. [2]