CUET Biology Important Topics & Chapter Wise Weightage
Common University Entrance Test 2026 ( CUET )
CUET 2026 exam will be administered at national level for admission to UG courses. Candidates preparing for CUET Biology must dive into CUET Biology important topics and chapter-wise weightage to ace the examination. Check the important subjects and question weightage for preparation.
CUET Biology Important Topics & Chapter Wise Weightage
CUET Biology Important Topics and Weightage: The National Testing Agency will conduct CUET exam for UG admissions across India. As per the tentative CUET 2026 exam dates, the exam for all domain subjects, including Biology, will be held in May. Candidates aspiring for Biology related courses have to select Biology as their domain subject during the CUET registration 2026. Such candidates must get an understanding of the CUET Biology important topics and chapter-wise weightage before they start the CUET preparation.
Explore colleges based on CUET
Want better recommendations?
There is a 90% more chance of getting best college recommendations by sharing preferences.
- Chat with our counselor
- Get your personalised list of colleges & exams matching your preferences
While preparing for CUET 2026 exam for Biology admission, candidates must focus on the important topics and chapter weightage. Read this article to know the CUET Biology important topics and chapter wise weightage for a top-notch preparation strategy.
CUET UG question paper for each subject will consist of 50 questions. Candidates will be required to attempt all questions and no optional questions will be provided. In CUET UG 2026 there are 37 subjects- 13 languages, 23 domain subjects and general tests. While filling the CUET application form, candidates can select upto five CUET subjects aligning with the subjects studied in class 12th and course requirement.
Candidates must attempt all the questions of the subjects selected. However, candidates must keep in mind the negative marking and select the options carefully.
CUET previous year question papers have been released for CUET 2025. National Testing Agency releases the CUET previous year question papers for all subjects and languages. Candidates preparing for CUET must download the previous year question papers to become familiar with the CUET exam pattern and the difficulty level of the question paper. NTA releases the CUET question papers for Languages, Domain subjects and General test seperately. No pre registrations are required to download the CUET previous year question papers.
CUET 2026 will be scheduled tentatively in May/June in CBT mode. CUET previous year question papers for 2025 is available for downlaod. Candidates can download the CUET 2025-2022 question papers here.
- CUET Biology Exam Pattern 2026
- CUET Biology Syllabus 2026
- CUET Biology Important Topics
- CUET Biology Chapter Wise Weightage
- CUET Domain Subjects: Syllabus and Question Paper
- CUET Biology Preparation Tips
CUET Biology Exam Pattern 2026
Before candidates start preparing, they must obtain a good understanding of the CUET exam pattern. CUET exam pattern remains the same, irrespective of the domain subject. Refer to the table below for more details on CUET UG exam pattern 2026.
Explore more Science exams with upcoming dates
14 Nov '24 - 30 Oct '25
1 Jan '26
28 Feb '26
2 Dec '24 - 19 Aug '26
6 Nov '25
9 Nov '25
21 Nov '25
24 Mar '26
21 Mar '26 - 24 Apr '26
| Features |
Details |
|---|---|
| Number of questions |
50 (compulsory) |
| Type of questions |
Multiple Choice Question (MCQ) |
| CUET Biology exam duration |
60 minutes |
| CUET marking scheme |
+5 for each correct answer -1 for each incorrect answer |
CUET Biology Syllabus 2026
The table below mentions the CUET Biology syllabus:
| Unit as per CUET Biology Syllabus |
Topics in CUET Biology Syllabus |
|---|---|
| Unit I: Reproduction |
Reproduction in organisms: Reproduction, a characteristic feature of all organisms for the continuation of species; Modes of reproduction –Asexual and sexual; Asexual reproduction; Modes- Binary fission, sporulation, budding, gemmule, fragmentation; vegetative propagation in plants. Sexual reproduction in flowering plants: Flower structure; Development of male and female gametophytes; Pollination–types, agencies and examples; Outbreedings devices; Pollen-Pistil interaction; Double fertilization; Post fertilization events– Development of endosperm and embryo, Development of seed and formation of fruit; Special modes– apomixis, parthenocarpy, polyembryony; Significance of seed and fruit formation. Human Reproduction: Male and female reproductive systems; Microscopic anatomy of testis and ovary; Gametogenesis- spermatogenesis & oogenesis; Menstrual cycle; Fertilisation, embryo development upto blastocyst formation, implantation; Pregnancy and placenta formation (Elementary idea); Parturition (Elementary idea); Lactation (Elementary idea). Reproductive health: Need for reproductive health and prevention of sexually transmitted diseases(STD); Birth control- Need and Methods, Contraception and Medical Termination of Pregnancy (MTP); Amniocentesis; Infertility and assisted reproductive technologies – IVF, ZIFT, GIFT (Elementary idea for general awareness). |
| Unit II: Genetics and Evolution |
Heredity and variation: Mendelian Inheritance; Deviations from Mendelism– Incomplete dominance, Co-dominance, Multiple alleles and Inheritance of blood groups, Pleiotropy; Elementary idea of polygenic inheritance; Chromosome theory of inheritance; Chromosomes and genes; Sex determination –In humans, birds, honeybee; Linkage and crossing over; Sex-linked inheritance- Haemophilia, Colour blindness; Mendelian disorders in humans– Thalassemia; Chromosomal disorders in humans; Down syndrome, Turner’s and Klinefelter’s syndromes. Molecular Basis of Inheritance: Search for genetic material and DNA as genetic material; Structure of DNA and RNA; DNA packaging; DNA replication; Central dogma; Transcription, genetic code, translation; Gene expression and regulation–Lac Operon; Genome and human genome project; DNA fingerprinting. Evolution: Origin of life; Biological evolution and evidence for biological evolution (Paleontological, comparative anatomy, embryology, and molecular evidence); Darwin’s contribution, Modern Synthetic theory of Evolution; Mechanism of evolution–Variation(Mutation and Recombination) and Natural Selection with examples, types of natural selection; Gene flow and genetic drift; Hardy- Weinberg’sprinciple; Adaptive Radiation; Human evolution. |
| Unit III: Biology and human welfare |
Health and Disease: Pathogens; parasites causing human diseases (Malaria, Filariasis, Ascariasis, Typhoid, Pneumonia, common cold, amoebiasis, ring worm); Basic concepts of immunology–vaccines; Cancer, HIV and AIDs; Adolescence, drug and alcohol abuse. Improvement in food production: Plant breeding, tissue culture, single cell protein, Biofortification; Apiculture and Animal husbandry. Microbes in human welfare: In household food processing, industrial production, sewage treatment, energy generation, and as biocontrol agents and biofertilizers. |
| Unit IV: Biotechnology and its Applications |
Principles and process of Biotechnology: Genetic engineering(RecombinantDNAtechnology). Application of Biotechnology in health and agriculture: Human insulin and vaccine production, gene therapy; Genetically modified organisms-Bt crops; Transgenic Animals; Biosafety issues–Biopiracy and patents. |
| Unit V: Ecology and Environment |
Organisms and environment: Habitat and niche; Population and ecological adaptations; Population interactions– mutualism, competition, predation, parasitism; Population attributes–growth, birth rate and death rate, age distribution. Ecosystems: Patterns, components; productivity and decomposition; Energy flow; Pyramids of number, biomass, energy; Nutrient cycling (carbon and phosphorous); Ecological succession; Ecological Services– Carbon fixation, pollination, oxygen release. Biodiversity and its conservation: Concept of Biodiversity; Patterns of Biodiversity; Importance of Biodiversity; Loss of Biodiversity; Biodiversity conservation; Hotspots, endangered organisms, extinction, Red Data Book, biosphere reserves, National parks, and sanctuaries. Environmental issues: Air pollution and its control; Water pollution and its control; Agrochemicals and their effects; Solid waste management; Radioactive waste management; Greenhouse effect and global warming; Ozone depletion; Deforestation; Any three case studies as success stories addressing environmental issues. |
Know what is radioactivity in detail.
Also Read: CUET Syllabus 2026
CUET Biology Important Topics
The table below mentions the unit wise important topics for CUET Biology exam:
| Name of CUET Biology Unit |
CUET Biology Important Topics |
|---|---|
| Reproduction |
|
| Genetics and Evolution |
|
| Biology and Human Welfare |
|
| Biotechnology and Its Application |
|
| Ecology and Environment |
|
CUET Biology Chapter Wise Weightage
Candidates preparing for CUET Biology exam can refer to the previous year's analysis to get an idea of important topics and the number of questions from each topic. The table below mentions the expected chapter-wise weightage for CUET Biology exam based on the past trends:
| Important topics |
Expected number of questions |
|---|---|
| Reproduction |
15 |
| Ecology and Environment |
10 |
| Biology and Human Welfare |
8 |
| Genetics and Evolution |
10 |
| Biotechnology and Its Application |
7 |
Also Read: CUET Chapter Wise Weightage for Science/Commerce/Humanities
CUET Domain Subjects: Syllabus and Question Paper
As per the CUET UG 2026 exam pattern, the question paper will include 50 multiple-choice questions (MCQs). The CUET UG 2026 exam will be conducted for 13 languages, 23 domain subjects, and general test. Each subject will consist of 50 MCQs and there will no optional questions. All questions are mandatory to attempt. For every wrong answer negative marking of one mark will be attracted.
The CUET questions are objective in nature and carries four options also known as MCQs. Candidates will have to choose the correct answer option and click on it with the help of mouse. Since CUET UG 2026 exam will be conducted in a CBT mode, test-takers will be able to mark only one answer option. In case it is the correct option, students will get +5 marks and in case of wrong answer, negative marking scheme will be applied. Hence, candidates must ensure the accuracy of the answer before selecting the answer.
Candidates aspiring for CUET can download the CUET domain subject wise question paper and syllabus PDF for other subjects below:
| Subjects |
CUET Syllabus |
CUET Question Paper |
|---|---|---|
| English |
||
| Biology |
||
| Accountancy/ Book Keeping |
||
| Business Studies |
||
| Chemistry |
||
| Computer Science/ Informatics Practices |
||
| Engineering Graphics |
||
| Entrepreneurship |
||
| Geography/Geology |
||
| Home Science |
||
| Knowledge Tradition and Practices of India |
CUET Knowledge Tradition and Practices of India Question Paper |
|
| Legal Studies |
||
| Environmental Science |
||
| Mathematics |
||
| Physical Education/ NCC /Yoga |
||
| Physics |
||
| Political Science |
||
| Psychology |
||
| Sociology |
||
| Teaching Aptitude |
||
| Agriculture |
||
| Mass Media/ Mass Communication |
||
| Anthropology |
||
| Fine Arts/ Visual Arts (Sculpture/ Painting)/Commercial Arts |
||
| Performing Arts |
||
| History |
||
| General Test |
CUET Biology Preparation Tips
During the CUET 2026 preparation for Biology domain subject, candidates can follow the preparation tips for holistic exam preparation:
- Analyse past papers to know the important topics that appear in CUET Biology question paper.
- Study using CBSE books to obtain foundational clarity of the topics.
- Practise previous year question papers and mock tests: This will help candidates in improving their speed and accuracy.
- Make short notes for help in revision phase
Preparing for any competitive exam will also require clarity of the exam pattern. Candidates must analyse the past papers to understand the exam pattern and syllabus.
Read More:
News & Updates
Explore Other Exams
Aug '25 | NEST NISER commencement of cla... |
18 Aug '25 | NEST CEBS 2025 Counselling: Cl... |
16 Aug '25 - 19 Aug '25 | IISER 2025 Round 4 Seat Allotm... |
8 Aug '25 - 12 Aug '25 | IISER 2025 Round 3 Seat Allotm... |
Jul '25 | ITM NEST 2025 Result Date |
Jun '25 | ITM NEST 2025 Exam date |
Nov '25 | OUAT 2025 Campus Reporting for... |
Jan '26 | OUAT 2025 Campus Reporting for... |
Student Forum
Anything you would want to ask experts?Answered 6 days ago
Definitely, along with LPUNEST, LPU accepts JEE (main) and CUET for B. Technical courses. The candidates can apply through any of these entrance tests and will be granted admission on the basis of valid scores, eligibility criteria, and counselling processes. The candidates would have flexibility an
S
Contributor-Level 10
Answered a week ago
No, CUET UG exam 2026 date has not been announced yet. It is expected that National Testing Agency will announce the CUET exam date 2026 anytime soon. The exam is expected to be scheduled in May-June. Candidates willing to appear for the exam must make sure to register for the exam online. As per th
Contributor-Level 10
Answered a week ago
The exam (CUET UG 2025) was held from May 13 to early June (roughly) for many programmes.
The counselling/admission process for BCA programmes at many universities began in July 2025. For example, one news source for a university in Indore said counselling and registration “will soon open … likely b
B
Beginner-Level 1
Answered 2 weeks ago
No you can't. To get admission in ipu in BBA LLB course you have to give CLAT Exam
H
Beginner-Level 1
Answered 3 weeks ago
Career College Bhopal provides CUET Scholarships. Students who have appeared for the CUET exam are eligible for this scholarship. Shortlisted students get 10% waiver in the fee under this scholarship.
N
Guide-Level 15
Answered 3 weeks ago
The table below shows the top colleges in India accepting CUET scores along with their tuition fees:
Top Colleges | Tuition Fees |
|---|---|
Hindu College | INR 86,010 |
Miranda House | INR 19,014 |
Hansraj College | INR 540 |
Kirori Mal College | INR 50,445 |
ARSD College | INR 540 |
Disclaimer: This info. is taken from official website and may vary.
T
Contributor-Level 10
Answered 4 weeks ago
You can't do BBA from CUET with PCB in 12 th as CUET requires the same subjects as in 12th for BBA you need math's English and general test
L
Beginner-Level 1
Answered a month ago
No, Bapuji Academy of Management & Research (BAMR) is not under CUET. The academy accepts the scores of certain other entrance exams such as, MAT/PGCET/KMAT. Candidates who have passed graduation with a minimum of 50% aggregate (45% for reserved category) can apply for admission.
S
Contributor-Level 10
Answered a month ago
No, Terna Global Business School is not under CUET. Rather the college accepts scores of various other entrance exams such as CAT, XAT, GMAT, MAT, MAH-CET, etc. Candidates are not required to appear for the CUET exam rather they must appear for any of these exams.
S
Contributor-Level 10
Answered a month ago
No, Chandola Homoeopathic Medical College and Hospital is not under CUET. Instead the college accepts the scores of the UPMT exam for admission to the BHMS course. This is the Uttaranchal Pre-Medical Test and is conducted by the State Government of Uttarakhand at different centres.
S
Contributor-Level 10
CUET UG Language section will consist of 50 questions. Candidates will be required to attempt all questions. There will be no optional questions.
The language section will assess candidate's reading comprehension based on different types of passages. This section will also include questions from grammar. To prepare for the CUET UG language section, candidates must solve previous year question papers and mock tests to become familiar with the type of questions asked in the exam. Candidates will be given a duration of 45 minutes to attend this section of CUET UG.