IAT (IISER) Biology Chapter Weightage
Analyze 90 IAT (IISER) Biology PYQs by chapter, topic group and recent year trend. Use the ranking to prioritize high-frequency chapters before practicing.
Biology30 chapters/topics90 PYQs
90
Total PYQs
IAT (IISER) Biology
30
Chapters Ranked
Chapter/topic pages
2026-2026
Year Range
Based on paper metadata
90
Last 5 Years
2022-2026
Highest share
Principles of Inheritance and Variation
13.3% of Biology PYQs
Top 5 chapter share
37.8%
How much of this subject is concentrated in the first five chapters.
Fastest rising
Stable
Trend data is limited for this subject.
Recent Year Trend
2026Latest year
202690 max PYQs/year2026
Chapter Group Share
90PYQs
Botany68.9%
Zoology31.1%
Top Chapter Share
#1 Principles of Inheritance and Variation12 PYQs13.33%Stable
#2 Molecular Basis of Inheritance7 PYQs13.33%Stable
#3 Biotechnology: Principles and Processes6 PYQs6.67%Stable
#4 Human Health and Diseases5 PYQs0%Stable
#5 Animal Kingdom4 PYQs0%-100% falling
#6 Biomolecules4 PYQs6.67%Stable
#7 Cell Cycle and Cell Division4 PYQs0%Stable
#8 Locomotion and Movement4 PYQs6.67%Stable
#9 Photosynthesis in Higher Plants4 PYQs6.67%Stable
#10 Anatomy of Flowering Plants3 PYQs6.67%Stable
Biology Weightage Map
#1
Principles of Inheritance and Variation
12 PYQs13.33%
#2
Molecular Basis of Inheritance
7 PYQs13.33%
#3
Biotechnology: Principles and Processes
6 PYQs6.67%
#4
Human Health and Diseases
5 PYQs0%
#5
Animal Kingdom
4 PYQs0%
#6
Biomolecules
4 PYQs6.67%
#7
Cell Cycle and Cell Division
4 PYQs0%
#8
Locomotion and Movement
4 PYQs6.67%
#9
Photosynthesis in Higher Plants
4 PYQs6.67%
#10
Anatomy of Flowering Plants
3 PYQs6.67%
#11
Cell - The Unit of Life
3 PYQs0%
#12
Ecosystem
3 PYQs0%
#13
Organisms and Populations
3 PYQs6.67%
#14
Respiration in Plants
3 PYQs0%
#15
Sexual Reproduction in Flowering Plants
3 PYQs0%
#16
Body Fluids and Its Circulation
2 PYQs6.67%
Momentum Watch
Most Repeated Biology Chapters
#1
Principles of Inheritance and Variation
#2
Molecular Basis of Inheritance
#3
Biotechnology: Principles and Processes
#4
Human Health and Diseases
#5
Animal Kingdom
#6
Biomolecules
#7
Cell Cycle and Cell Division
#8
Locomotion and Movement
#9
Photosynthesis in Higher Plants
#10
Anatomy of Flowering Plants
#11
Cell - The Unit of Life
#12
Ecosystem
#13
Organisms and Populations
#14
Respiration in Plants
#15
Sexual Reproduction in Flowering Plants
#16
Body Fluids and Its Circulation
#17
Breathing and Exchange of Gases
#18
Chemical Coordination and Integration
#19
Digestion and Absorption
#20
Excretory Products and Their Elimination
#21
Human Reproduction
#22
Mineral Nutrition
#23
Biodiversity and Conservation
#24
Biological Classification
#25
Biotechnology and It's Applications
#26
Microbes in Human Welfare
#27
Morphology of Flowering Plants
#28
Neural Control and Coordination
#29
Reproduction in Organisms
#30
Structural Organisation in Animals