List of top Biology Questions asked in HBSE Class 12

Define AIDS, its causative agent, and methods of prevention.
State and explain Mendel's Law of Independent Assortment using a dihybrid cross.
Define Double Fertilization and explain its significance in flowering plants.
What is Megasporogenesis? Describe the development of a female gametophyte.
Define Adaptive Radiation and give examples like Darwin's Finches.
What is Innate Immunity? Differentiate between active and passive immunity.
Explain the Semi-conservative mode of DNA replication with the Meselson and Stahl experiment.
Discuss different contraceptive methods and their roles in population control.
Explain the various phases of the menstrual cycle.