There is a total of 50 questions, asked in the biology section of ICAR AIEEA. From the previous year trends, the approximate number of questions in each chapter -

Class 11 Biology -

• The Living World - 1 question
• Biological Classification - 2-3 questions
• Plant Kingdom - 3-4 questions
• Animal Kingdom - 3-4 questions
• Morphology of Flowering Plants - 1-2 questions
• Anatomy of Flowering Plants - 1-2 questions
• Structural Organisation in Animals - 1 question
• Cell - The Unit of Life - 2-3 questions
• Biomolecules - 2-3 questions
• Cell Cycle and Cell Division - 2-3 questions
• Transport in Plants - 1-2 questions
• Mineral Nutrition - 1-2 questions
• Photosynthesis in Higher Plants - 1-2 questions
• Respiration in Plants - 1-2 questions
• Plant Growth and Development - 1-2 questions
• Digestion and Absorption - 1-2 questions
• Breathing and Exchange of Gases - 1-2 questions
• Body Fluids and Circulation - 1-2 questions
• Excretory Products and Their Elimination - 1-2 questions
• Locomotion and Movement - 1-2 questions
• Neural Control and Coordination - 1-2 questions
• Chemical Coordination and Integration - 1-2 questions

Class 12 Biology -

• Reproduction in Organisms - 1-2 questions
• Sexual Reproduction in Flowering Plants - 1-2 questions
• Human Reproduction - 1-2 questions
• Reproductive Health - 1-2 questions
• Principles of Inheritance and Variation - 3-4 questions
• Molecular Basis of Inheritance - 3-4 questions
• Evolution - 2-3 questions
• Human Health and Disease - 2-3 questions
• Strategies for Enhancement in Food Production - 2-3 questions
• Microbes in Human Welfare - 2-3 questions
• Biotechnology: Principles and Processes - 2-3 questions
• Biotechnology and its Applications - 2-3 questions
• Organisms and Populations - 2-3 questions
• Ecosystem - 2-3 questions
• Biodiversity and Conservation - 1-2 questions
• Environmental Issues - 1-2 questions

So, roughly, we can say that out of 50 questions in Biology, approximately 54% questions (approx. 27 questions) come from Class 11 chapters and remaining 46% questions (approx. 23 questions) come from Class 12 chapters.