Biology being one of the most popular courses among candidates appearing for the CUET UG 2026 exam, scoring good marks becomes crucial for the test-takers. To gain an extra edge in the exam, candidates must shortlist the CUET Biology chapter-wise weightage and important topics.
For all CUET Biology aspirants, whether Class XII students, repeat test-takers, or first-timers, understanding chapter-wise weightage is crucial. SciAstra is one of the most trusted platforms for the aspirants of the IISER and NEST exam preparation.
Our dedicated team has been working tirelessly to provide academic assistance to the students with accurate, topic-wise, and high-weightage content to ameliorate the exam preparation. The data provided in this article is based on in-depth research and analysis of previous years’ question papers, ensuring reliability and precision.
The CUET Biology important topics and weightage data mentioned here have been carefully compiled by our SciAstra Team, which makes the information authentic and dependable.
Latest Updates:
Why Know CUET Biology Chapter Wise Weightage?
It is essential for candidates to understand that while preparing for CUET 2026, their topmost priority should be to cover the entire syllabus thoroughly. To enhance their preparation and achieve a higher score, candidates should be aware of the chapter-wise weightage based on previous year trends.
Here are the reasons why an aspirant should refer to the CUET Biology chapter-wise weightage:
Smart Preparation: Knowing the analysis of the topics will help the candidates in prioritising the high-weightage topics, ensuring efficient use of study time.
Better Time Management: This will help the candidates allocate more time to frequently asked chapters.
Improved Accuracy: When the candidates emphasise more on the high-weightage topics, this activity will help the candidates in reducing the confusion during the CUET UG exam.
Strategic Revision: The test takers will get guidance on which areas to revise more intensively before the test.
Boosts Confidence: On the exam day, it is important for the test takers to be in a full concentration and confidence mode. Knowing high-weightage topics will significantly reduce exam anxiety and build a focused mindset.
Higher Scoring Potential: Concentrating on high-weightage areas increases the overall CUET Biology score and increases higher chances of getting admissions in the course they want to pursue among the CUET 2026 participating universities.
CUET Biology Topic-Wise Weightage Analysis
While preparing for the CUET 2026 Biology Exam, candidates must adhere to the officially released CUET 2026 syllabus. As the level of competition increases every year and Biology remains one of the most preferred subjects among CUET applicants, it is essential to understand the previous trends of CUET Biology topic-wise weightage analysis to secure admission to their desired course and university.
This analysis helps improve candidates’ accuracy, thereby increasing their chances of meeting the CUET 2026 cutoff. Check out the list of topics and their frequency of questions asked by the exam officials below:
Units | Chapters | 2022 | 2023 | 2024 | 2025 |
Reproduction | Sexual Reproduction in Flowering Plants | 2 | 2 | 3 | 7 |
Human Reproduction | 4 | 2 | 3 | 3 | |
Reproductive Health | 3 | 2 | 5 | 2 | |
Genetics and Evolution | Principles of Inheritance and Variation | 4 | 2 | 4 | 3 |
Molecular Basis of Inheritance | 4 | 4 | 4 | 4 | |
Evolution | 2 | 3 | 4 | 4 | |
Biology and Human Welfare | Human Health and Disease | 5 | 3 | 4 | 4 |
Microbes in Human Welfare | 3 | 3 | 3 | 4 | |
Biotechnology and Its Applications | Biotechnology: Principles and Processes | 5 | 3 | 4 | 4 |
Biotechnology and Its Application | 3 | 4 | 4 | 3 | |
Ecology and Environment | Organism and Population | 3 | 7 | 3 | 1 |
Ecosystem | 3 | 2 | 4 | 5 | |
Biodiversity and Conservation | 3 | 2 | 5 | 6 |
Note: The total number of questions in this table reflects only those from the 2025 revised syllabus. Previous years’ totals may be less, as questions from out-of-syllabus chapters are not included.
CUET Biology Chapter Wise Weightage: Important Chapters
CUET 2026 Biology aspirants must also know which are the most important chapters among the mentioned CUET syllabus by the exam officials. This will help the aspirants to at least make the high-weightage chapters ready for the examination.
Here is the list of chapter weightage analysis of the CUET 2026 Biology Syllabus:

CUET 2026 Biology Syllabus
CUET Biology syllabus 2026 comprises the topics mentioned by the exam officials on the official website, ie., cuet.nta.nic.in. Candidates who are interested in pursuing their graduation degree in Biology/Biological Science/Biotechnology/ Biochemistry can check out the complete detailed syllabus from here:
Chapter | Topics |
Reproduction | Sexual Reproduction in Flowering Plants |
Human Reproduction | |
Reproductive Health | |
Genetics and Evolution | Principles of Inheritance and Variation |
Molecular Basis of Inheritance | |
Evolution | |
Biology and Human Welfare | Human Health and Disease |
Microbes in Human Welfare | |
Biotechnology and Its Application | Biotechnology: Principles and Processes |
Biotechnology and its Applications | |
Ecology and Environment | Organisms and Populations |
Ecosystem | |
Biodiversity and Conservation |
Candidates can check out the complete syllabus from- CUET Biology Syllabus 2026
CUET Biology 2025 Exam Difficulty Level
CUET UG 2025 exam was conducted from May 13, 2025, to June 3, 2025, at various exam centres across the nation and overseas. The CUET 2025 Biology exam was held on May 14, May 15, and May 26, 2025. The Biology exam assessed candidates’ domain knowledge, as well as their critical and practical skills, through Multiple Choice Questions (MCQs) in online/CBT mode for 60 minutes (one hour).
The overall difficulty level of the CUET Biology 2025 exam was found to be moderately easy. Candidates can check the unit- or chapter-wise exam difficulty level/ CUET Biology exam analysis from here:
Unit Name | Exam Difficulty Level |
Reproduction | Moderate to Easy |
Genetics and Evolution | Moderate to Easy |
Biology and Human Welfare | Easy |
Biotechnology and Its Application | Moderate to Easy |
Ecology and Environment | Easy |
CUET Biology 2026 Preparation Tips
Candidates doing preparation for the biology exam need to have a well-structured and smart approach to meet CUET cut off 2026. Candidates can check out the below preparation tips for CUET Biology exam from here:
Know Exam Pattern and Syllabus: At first, the candidate must be aware of the CUET exam pattern and syllabus. The exam pattern will help them in understanding the type of questions asked, the marking scheme and the depth of the topics asked. Likewise, the syllabus will inform the candidates about the topics that are mandatory for them to study.
Solve CUET Biology previous year question paper: One of the most crucial aspects of preparation is solving CUET previous years’ question papers (PYQs) and taking mock tests regularly. This not only helps you understand the question pattern and difficulty level but also improves your time management skills, which is vital in a timed competitive exam.
Allocate Time Wisely: Candidates should focus on having a study schedule for around 4 hours per day. When the exam approaches, one needs to increase their dedicated study time.
Revision is Key: Make a habit of revising the topics studied at the end of the week. Mere knowing the syllabus released by the officials won’t suffice for the preparation. The selection of the best and standard books will significantly impact your performance.
Practice and Self-Assessment: One of the most effective ways to gauge your preparation is by solving previous year’s question papers and taking mock tests.
Conclusion
It is important for the candidates to know the CUET Biology topic-wise weightage and important chapters, as this will help them in building a smart and effective preparation strategy. This exercise will help the candidates in bifurcating the CUET syllabus and focusing on high-priority areas while maintaining complete syllabus coverage. Over the years, it has been observed that the chapters like Genetics, Ecology, Human and Plant Physiology, Cell Biology, and Biotechnology carry higher weightage, making them crucial for scoring well. By getting the conceptual clarity, regular practice of MCQs, and consistent revision, candidates can enhance both accuracy and confidence.
Read More: CUET Subject Mapping 2026
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