Biology Concept Weightage 2020-2023

Biology Concept Weightage 2020-2023

Biology, which constitutes 50% of the NEET exam, is heavily based on NCERT textbooks, covering Botany and Zoology.

Key Topics and Weightage:

• Human Physiology (Digestion, Respiration, Circulation, Excretion) – 20-25%
• Genetics and Evolution – 15-18%
• Cell Biology (Cell Structure, Biomolecules, Cell Cycle) – 10-12%
• Plant Physiology – 10-12%
• Ecology and Environment – 10-12%
• Reproduction (Human and Plant Reproduction) – 8-10%
• Biotechnology – 6-8%
• Animal Kingdom and Diversity of Living Organisms – 8-10%

Recent Trend:

• Human Physiology and Genetics consistently carry the highest weightage.
• Ecology and Plant Physiology are also major contributors, with regular questions each year.

Biology Chapter-Wise Weightage for NEET

Biology carries the most weight in NEET, with 50% of the total questions. It is divided into Botany and Zoology.

Class 11 Biology Chapter-Wise Weightage:

1.       Diversity in Living World: 10-12%

o    Five kingdoms of classification, taxonomy, and biological classification.

2.      Structural Organisation in Animals and Plants: 5-7%

o    Animal tissues, morphology of flowering plants, anatomy of flowering plants.

3.      Cell Structure and Function: 8-10%

o    Cell theory, structure, cell division (mitosis and meiosis), and biomolecules.

4.      Plant Physiology: 8-10%

o    Photosynthesis, respiration in plants, mineral nutrition, plant growth hormones.

5.      Human Physiology: 12-15%

o    Digestive system, respiratory system, circulatory system, excretory system, nervous system, and muscular system.

Class 12 Biology Chapter-Wise Weightage:

1.       Reproduction: 12-14%

o    Sexual and asexual reproduction in plants and animals, reproductive health.

2.      Genetics and Evolution: 12-14%

o    Mendelian inheritance, DNA, RNA, genetic code, evolution theories.

3.      Biology and Human Welfare: 3-5%

o    Human diseases, immunity, AIDS, cancer, drugs and alcohol abuse.

4.      Biotechnology and its Applications: 10-12%

o    Principles of biotechnology, applications in agriculture and medicine, genetic engineering.

5.      Ecology and Environment: 10-12%

o    Ecosystems, biodiversity, environmental issues, conservation strategies.

Key Insights:

• Biology: Focus on Human Physiology, Genetics and Evolution, and Reproduction as they carry the most weight.
• Chemistry: Pay attention to Organic Chemistry and Physical Chemistry, which have high weightage across the board.
• Physics: Prioritize Mechanics, Electrodynamics, and Optics as they frequently carry significant weight.