IAT-IISER

Biology Analysis

Comprehensive breakdown of 28 chapters with 75 previous year questions. Explore priority-sorted content and weightage analytics.

28
Chapters
75
Total Questions
PYQ
Years Covered

Chapters

Sorted by Questions
low Yield

Principles Of Inheritance And Variation

High-Yield Trend

2
2025
1
2024
2
2023
4
2022
1
2020
Topics 1
Questions 10
low Yield

Biotechnology: Principles And Processes

High-Yield Trend

1
2025
2
2024
1
2023
1
2022
Topics 1
Questions 5
low Yield

Human Health And Diseases

High-Yield Trend

2
2024
1
2023
1
2022
1
2020
Topics 1
Questions 5
low Yield

Molecular Basis Of Inheritance

High-Yield Trend

2
2025
1
2024
1
2023
1
2020
Topics 1
Questions 5
low Yield

Animal Kingdom

High-Yield Trend

1
2025
1
2024
1
2022
1
2020
Topics 1
Questions 4
low Yield

Cell Cycle And Cell Division

High-Yield Trend

1
2024
1
2023
1
2022
1
2020
Topics 1
Questions 4
low Yield

Biomolecules

High-Yield Trend

1
2025
2
2023
Topics 1
Questions 3
low Yield

Cell The Unit Of Life

High-Yield Trend

1
2025
1
2024
1
2022
Topics 1
Questions 3
low Yield

Ecosystem

High-Yield Trend

1
2025
1
2022
1
2020
Topics 1
Questions 3
low Yield

Locomotion And Movement

High-Yield Trend

1
2025
1
2024
1
2020
Topics 1
Questions 3
low Yield

Photosynthesis In Higher Plants

High-Yield Trend

1
2025
1
2024
1
2020
Topics 1
Questions 3
low Yield

Respiration In Plants

High-Yield Trend

1
2025
2
2022
Topics 1
Questions 3
low Yield

Sexual Reproduction In Flowering Plants

High-Yield Trend

1
2025
1
2024
1
2023
Topics 1
Questions 3
low Yield

Anatomy Of Flowering Plants

High-Yield Trend

1
2024
1
2023
Topics 1
Questions 2
low Yield

Breathing And Exchange Of Gases

High-Yield Trend

1
2025
1
2024
Topics 1
Questions 2
low Yield

Digestion And Absorption

High-Yield Trend

1
2023
1
2020
Topics 1
Questions 2
low Yield

Excretory Products And Their Elimination

High-Yield Trend

1
2025
1
2020
Topics 1
Questions 2
low Yield

Mineral Nutrition

High-Yield Trend

1
2023
1
2020
Topics 1
Questions 2
low Yield

Organisms And Populations

High-Yield Trend

1
2024
1
2020
Topics 1
Questions 2
low Yield

Biodiversity And Conservation

High-Yield Trend

1
2023
Topics 1
Questions 1
low Yield

Body Fluids And Its Circulation

High-Yield Trend

1
2022
Topics 1
Questions 1
low Yield

Chemical Coordination And Integration

High-Yield Trend

1
2022
Topics 1
Questions 1
low Yield

Human Reproduction

High-Yield Trend

1
2023
Topics 1
Questions 1
low Yield

Microbes In Human Welfare

High-Yield Trend

1
2020
Topics 1
Questions 1
low Yield

Morphology Of Flowering Plants

High-Yield Trend

1
2020
Topics 1
Questions 1
low Yield

Neural Control And Coordination

High-Yield Trend

1
2022
Topics 1
Questions 1
low Yield

Reproduction In Organisms

High-Yield Trend

1
2020
Topics 1
Questions 1
low Yield

Structural Organisation In Animals

High-Yield Trend

1
2023
Topics 1
Questions 1

About Biology for IAT-IISER

Scoring high in Biology is crucial for clearing the IAT-IISER cut-offs. Our chapter-wise breakdown helps you understand exactly which topics have historically carried the most weightage in the exam.

By practicing Biology previous year questions, you can familiarize yourself with the recurring concepts, difficulty level, and framing of questions. We recommend starting your revision with the chapters that have the highest number of PYQs listed above.

Biology Preparation FAQs

How is the Biology section structured in IAT-IISER?

The Biology section tests your fundamental understanding and application of concepts. Reviewing the PYQs will give you a clear picture of the theoretical vs numerical ratio and the depth of knowledge required.

Which chapters should I prioritize in Biology?

The chapters are already sorted by the number of questions asked in previous years. Focus your initial preparation on the chapters at the top of the list, as they historically yield the most marks.