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CBSE Class 12 Biology Expected Question Paper 2025

Based on the questions that appeared in the last years from all chapters, CBSE Class 12 Biology Expected Question Paper 2025 has been provided on the page below.

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CBSE Class 12 Biology Expected Question Paper 2025: With the CBSE Class 12 Biology board exam approaching on March 22, 2025, students are eager to know the expected question paper pattern for 2025. With the exam approaching rapidly, our experts have released an expected question paper for CBSE Class 12 Biology 2025, spotlighting key topics and question types likely to appear based on past trends and the updated syllabus.

Students should focus on NCERT textbooks, as most questions in the CBSE exam are derived from NCERT concepts. Additionally, solving sample papers and previous years’ question papers will help improve time management and answer accuracy.

CBSE Class 12 Biology Expected Question Paper 2025

Based on the previous year’s trend, the most common questions asked from each chapter in the CBSE Class 12 Biology Expected Question Paper are provided in the following table:

Chapter Name

Question

Sexual Reproduction in Flowering Plant

  • Microsporogenesis and Megasporogenesis
  • Structure of Pollen grain
  • Structure of megasporangium and embryo sac
  • Pollination
  • Double fertilization and triple fusion
  • Types of seed

Human Reproduction

  • Reproductive Structures
  • Gametogenesis
  • Menstrual Cycle
  • Structure of Sperm
  • Blastocyst
  • Parturition

Reproductive Health

  • Contraceptive devices
  • Assisted Reproductive Technologies
  • MTP

Principle of Inheritance and Variation

  • ABO Blood grouping
  • Law of Dominance
  • Sex Determination
  • Mendelian Disorder
  • Pedigree Analysis
  • Genetic Disorder

Molecular basis of Inheritance

  • Double helix DNA Structure
  • DNA Replication
  • Structure of nucleosome
  • Feature of Genetic Code
  • Structure of t-rna
  • Lac Operon
  • DNA Fingerprinting

Evolution

  • SL Miller Experiment
  • Adaptive Radiation
  • Hardy Weinberg Equilibrium
  • Human Evolution

Human Health and Disease

  • Infectious and Non-infectious disease
  • Cell mediated and humoral immunity
  • Types of Barriers
  • Structure of Antibody
  • AIDS
  • Cancer

Microbes in Human Welfare

  • Sewage Treatment Plant
  • Structure of Biogas
  • Bioactive Molecules

Bio-Technology

  • Recombinant DNA technology
  • Gel Electrophoresis
  • Downstream processing
  • PCR
  • RNA Interference
  • Gene therapy
  • Bt-Cotton
  • Insulin

Organism and Pollution

  • AGE Pyramids
  • Factors affecting population density
  • Growth models

Ecosystem

  • Food Chain
  • Decomposition
  • Pyramids
  • Limitations of pyramid

Biodiversity and Conservation

  • Species Area Relationship
  • Causes of Biodiversity Loss
  • Reasons for Biodiversity Conservation
  • In-situ and Ex-situ Conservation

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