CUET Biology Chapter Wise Weightage 2026, Important Topics and Preparation Strategy
CUET Biology Chapter Wise Weightage 2026 highlights Reproduction (15–18 questions) as highest priority, followed by Genetics and Ecology. Based on NCERT Class 12 syllabus, the 50-question CBT exam carries 250 marks with –1 negative marking.
Ananya Gupta17 Dec, 2025
CUET Biology Chapter Wise Weightage 2026 plays a crucial role in shaping an effective study plan for aspirants preparing for the CUET UG Biology domain test. By revealing which units and chapters carry the highest number of questions, this weightage analysis helps students focus on high-impact topics, prioritise their revision, and manage their preparation efficiently. Since the CUET biology syllabus 2026 is closely aligned with the NCERT Class 12 Biology curriculum, understanding chapter-wise trends allows candidates to target key concepts, improve accuracy, and boost their overall performance in the exam.
CUET Biology Chapter Wise Weightage 2026 (Unit-Wise Trend Analysis)
Based on a thorough analysis of previous years' question papers, the weightage for the CUET Biology Chapter-Wise Weightage 2026 is not evenly distributed across all units. Focusing your study efforts on the units carrying the highest weightage can significantly improve your overall score. The table below shows the expected number of questions from each of the five units in the CUET Biology syllabus 2026.
|
CUET Biology Chapter Wise Weightage 2026 |
|||
|
CUET Biology Unit |
Unit Name |
Expected Number of Questions (Weightage) |
Weightage Trend |
|
Unit I |
Reproduction |
15–18 |
Highest Weightage |
|
Unit II |
Genetics and Evolution |
10–12 |
High Weightage, Conceptual |
|
Unit V |
Ecology and Environment |
10–12 |
High Weightage, Memory-Based |
|
Unit III |
Biology and Human Welfare |
8–10 |
Moderate Weightage, Application-Based |
|
Unit IV |
Biotechnology and Its Applications |
7–8 |
Moderate Weightage, Scoring |
Note: The unit-wise weightage for CUET Biology 2026 is an expected trend analysis based on the structure and pattern of the previous years' CUET UG exams.
CUET Biology Important Topics and Trend Analysis
The trend analysis shows that certain topics within the high-weightage units are frequently tested by the National Testing Agency (NTA). For an effective preparation strategy, you must prioritise the following CUET biology Important Topics & Trend Analysis points:
|
CUET Biology Important Topics and Trend Analysis |
||
|
Unit Name |
High-Weightage Chapters |
Key Important Topics for CUET 2026 |
|
Reproduction (Unit I) |
Sexual Reproduction in Flowering Plants, Human Reproduction, Reproductive Health |
Double fertilisation, Gametogenesis (Spermatogenesis and Oogenesis), Menstrual Cycle, Contraceptive Methods, IVF, and STDs. |
|
Genetics and Evolution (Unit II) |
Molecular Basis of Inheritance, Principles of Inheritance and Variation |
Mendelian Laws, Deviations from Mendelism (e.g., Incomplete Dominance, Co-dominance), Structure of DNA and RNA, DNA Replication, Transcription, Translation, Lac Operon, and Evidence of Evolution. |
|
Ecology and Environment (Unit V) |
Biodiversity and Conservation, Organisms and Populations |
Population attributes, Population interactions, Energy Flow in Ecosystem, IUCN categories, Biodiversity Hotspots, and Conservation strategies (In-situ and Ex-situ). |
|
Biotechnology (Unit IV) |
Biotechnology – Principles & Processes, Biotechnology and Its Applications |
Recombinant DNA Technology, PCR, Applications (Bt crops, Gene therapy, Human Insulin), and Biosafety Issues. |
|
Biology and Human Welfare (Unit III) |
Human Health and Disease, Microbes in Human Welfare |
Common Human Diseases (Typhoid, Malaria, Cancer, AIDS), Immunology (Vaccines), Microbes in sewage treatment, industrial products (Antibiotics), and Bio-control Agents. |
The questions are primarily objective and based on conceptual clarity and direct recall from the NCERT textbook.
CUET Biology 2026 Units and Chapters
CUET biology syllabus 2026 for the domain subject is solely based on the Class 12 NCERT Biology textbook. A detailed look at the 5 units and their constituent chapters will help you structure your preparation.
|
CUET Biology Syllabus 2026: Units and Chapters |
|
|
Unit |
Chapter Names (as per CUET Syllabus) |
|
Unit I: Reproduction |
Sexual Reproduction in Flowering Plants, Human Reproduction, Reproductive Health |
|
Unit II: Genetics and Evolution |
Principles of Inheritance and Variation, Molecular Basis of Inheritance, Evolution |
|
Unit III: Biology and Human Welfare |
Human Health and Disease, Microbes in Human Welfare, Strategies for Enhancement in Food Production |
|
Unit IV: Biotechnology and Its Applications |
Biotechnology – Principles and Processes, Biotechnology and Its Applications |
|
Unit V: Ecology and Environment |
Organisms and Populations, Ecosystem, Biodiversity and Conservation, Environmental Issues |
Note: Certain topics from the NCERT Class 12 syllabus have been excluded from the CUET curriculum, such as Organism and its Environment (Unit V). Always refer to the official NTA syllabus PDF for the final, detailed list.
CUET Biology Exam Pattern 2026
Familiarising yourself with the CUET Biology Exam Pattern 2026 is essential for effective time management and strategising during the test.
|
CUET Biology Exam Pattern 2026 |
|
|
Particulars |
Details |
|
Exam Mode |
Computer-Based Test (CBT) |
|
Total Questions |
50 Questions |
|
Questions to be Attempted |
50 Questions (All compulsory) |
|
Type of Questions |
Multiple Choice Questions (MCQs) |
|
250 Marks |
|
|
Exam Duration |
60 minutes |
|
Marking Scheme |
+5 Marks for every correct answer |
|
Negative Marking |
-1 Mark for every incorrect answer |
|
Unattempted Question |
0 Marks |
With 50 questions to be solved in 60 minutes, you have roughly 72 seconds per question. This necessitates quick recall and solid conceptual understanding.
CUET UG Biology Preparation Tips for 2026
To tackle the CUET Biology domain test, a focused and smart preparation strategy is key. Here are proven CUET UG biology preparation tips to maximise your score:
-
NCERT is the Core Foundation: Around 80-85% of the questions in CUET Biology are derived directly from the NCERT Class 12 textbook. Treat the NCERT book as your primary and most important resource.
-
Focus on High-Weightage Units: Start your preparation with the Reproduction, Genetics, and Ecology units, as they contribute the maximum number of questions to the paper (approximately 60% of the total paper).
-
Master Diagrams and Flowcharts: Biology often features diagram-based questions. Practice drawing and labelling important NCERT diagrams from chapters like Human Reproduction and Sexual Reproduction in Flowering Plants.
-
Practice Assertion-Reasoning: Dedicate time to practising Assertion-Reasoning (A-R) questions, as 5-6 such questions are typically included in the exam. Aim to solve 50–100 A-R questions per chapter to build your logical and analytical skills.
-
Create a 'Biology Dictionary': Over 25% of the paper may involve direct vocabulary such as definitions, scientific names, laws, enzymes, or diseases. Maintain a separate notebook or 'dictionary' of one-liners and key terms from NCERT for daily, quick revision.
-
Adopt a Revision Cycle: To ensure long-term retention of detailed concepts, follow a systematic revision cycle, such as revising topics after 1 day, 3 days, and then 7 days of initial study.
-
Mock Tests and Time Management: Regularly attempt CUET-specific mock tests and CUET Biology previous year papers. Practice solving the paper within the 60-minute limit to improve your speed and accuracy. Practice spending less than 45 seconds on recall-based questions and slightly more on conceptual and data-based questions.
Physics Wallah provides CUET UG Online Coaching with live classes, study materials, and practice tests. The courses are designed to make learning simple and effective, helping you prepare for your CUET UG exams with ease.