CUET Biology Important Topics 2025: High Weightage Topics

Overview: From the 5 units in CUET Biology syllabus, each unit has around 4-5 high-weightage sub-topics that may boost your score if prepared well. Get insights into the CUET Biology important topics to prepare well for the exam. 

Knowing the important topics are helpful to clear the cutoffs for highly popular courses like B.Sc. in biology, B.Sc Botany etc. The prior knowledge of these important topics for CUET Biology and sub-topics from the syllabus will help you prepare well and score a prefect score.

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CUET Biology Important Topics 2025

If one of your domain subjects in CUET is Biology, then knowing the key topics for CUET Biology preparation will give you a competitive edge. The Biology syllabus has 5 units with 13 chapters int total:  

• Unit 1: Reproduction
• Unit 2: Genetics and Evolution
• Unit 3: Biology and Human Welfare
• Unit 4: Biotechnology and Its Application
• Unit 5: Ecology and Environment

Unit-wise CUET Biology Important Topics 2025

The table below mentions the unit wise important CUET Biology topics according to the CUET Biology syllabus: 

Unit 1: Reproduction

• Reproduction in Organism
• Sexual Reproduction in flowering plants
• Reproduction in Humans
• Reproductive Health

Unit 2: Genetics and Evolution

• Heredity and variations
• Molecular Basis of Inheritance
• Sex-linked Inheritance
• Gene Expression and regulation
• Mechanism of Evolution
• Evolution

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The CUET Biology important topics 2025 for units 3, 4 and 5 with key topics for CUET Biology preparation are: 

Unit 3: Biology and Human Welfare

• Health and Disease
• Microbes in Human Welfare
• Improvement in Food Production

Unit 4: Biotechnology and Its Application

• Applications of Biotechnology in health and agriculture
• Principle and process of Biotechnology

Unit 5: Ecology and Environment

• Organism and environment
• Biodiversity and its conservation
• Ecosystems
• Environmental issues

Expected CUET Biology Chapter Wise Weightage 2025

From the analysis and trends in CUET previous year question papers regarding the CUET Biology important topics, the expected chapter-wise weightage for CUET Biology exam is given below: 

Important topics	Expected number of questions
Reproduction	15-18
Ecology and Environment	10-12
Biology and Human Welfare	8-10
Genetics and Evolution	10-12
Biotechnology and Its Application	7-8

CUET Biology Exam Pattern 2025

As per the CUET exam pattern, the biology exam will look like: 

Criteria	Details
Mode	Online
Medium	English/Language Chosen in Section I
Duration	60 minutes
Type of Questions	Objective
Number of Questions (to be attempted)	50 out of 50
Marking Scheme	Correct Answer: +5
	Incorrect Answer: -1
	Unattempted Answer: 0

CUET Biology Preparation Tips 2025

Want to know how to prepare for CUET Biology important topics easily? Read the tips below: 

• Focus on Class 12 NCERT as it covers 80% of the CUET Biology questions. 
• The exam has around 5-6 assertion-reason questions. Practice 50–100 assertion-reason questions per chapter.
• You forget 50% of what you study within 24 hours unless revised. Follow a 1–3–7 day revision cycle after studying each of the high weightage topics in CUET Biology.
• Over 25% of the paper involves direct vocabulary, like definitions, scientific names, laws, enzymes, or diseases. Make a separate “Dictionary” of one-liners from NCERT for CUET important chapters for Biology and revise it daily.
• With 50 questions in 60 minutes, you get nearly 72 seconds per question. But if you waste time on 3–4 tough questions, you may lose 4–5 easier ones later. Practice using a timer. Keep target like: <45 sec for recall-based, <1 min for conceptual and 1–1.2 min for data-based/assertion-reason questions.

Books for CUET Biology Preparation 2025

The CUET preparation books cover all the important topics for CUET Biology and provide a detailed understanding of the concepts. List of books that you must use to prepare the CUET Biology important topics include: 

• Together with Biology by S. Chand and Biology by Campbell and Reece 
• NCERT Class 12 Biology Textbook 
• Biology at your fingertips by Rahul Chawla 
• S. Chand’s Biology for class XII by B.P. Pandey 
• Pradeep’s A Text Book of Biology class 12 by P.S. Dhami 

Key Takeaways 

• Focus on high-weightage areas from the CUET Biology important topics like reproduction(20-25%), ecology and environment (12-15%), and genetics (18-22%) to maximize your score.
• Analyze previous year’s question papers to understand the common question formats, and areas that require more focus.
• Given the vast number of CUET Biology exam key topics, consistent revision is key to learn and remember detailed concepts. 
• Use CUET mock tests, sample papers, and PYPs to improve your score. Join CUET online coaching incase you need more help in preparation.