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RBSE Class 12 Biology Exam Pattern 2025-26 is now available. The curriculum comprises a total of 13 chapters. The Biology theory paper will be conducted for 56 marks, and 14 marks will be provided for the sessional. There will be a practical exam for 30 marks to be conducted before the theory papers. The question paper will consist of objective-type questions, very short-answer-type questions, short-answer-type questions, long-answer-type questions, and essay-type questions. Internal choices will be available in the question paper according to the latest exam pattern. The board question paper will be based on the RBSE Class 12 Biology Syllabus 2025-26 .
Do you want to check the latest RBSE Class 12 Biology Exam Pattern 2025-26? Scroll below:
RBSE Class 12 Latest Updates 2025-26
- December 5, 2025: RBSE 10th Exam Date 2026 has been announced on December 5, 2025. The exams will take place from February 12 to March 12, 2026.
RBSE Class 12 Biology Exam Pattern 2025-26
Some minor changes have been made to the exam pattern by the Rajasthan Board of Secondary Education, so you need to check the latest updates. You can check the recently updated exam pattern from the table given below:
Units | Topics | Periods |
|---|---|---|
Sexual Reproduction in Flowering Plants | Flower structure; Pre-fertilisation events; Stamens; Microsporangium & Pollen grain; Pistil; Megasporangium & Embryosac; Pollination; Double fertilisation; Post-fertilisation events – Endosperm, Embryo, Seed; Apomixis & Polyembryony | 5 |
Human Reproduction | Male & Female reproductive systems; Gametogenesis; Menstrual cycle; Fertilisation & implantation; Pregnancy & embryonic development; Parturition; Lactation | 4 |
Reproductive Health | Reproductive health issues & strategies; Population stabilisation; Birth control; MTP; STIs; Infertility | 2 |
Principles of Inheritance & Variation | Mendel’s laws: One-gene inheritance (dominance, segregation, incomplete dominance, co-dominance); Two-gene inheritance – independent assortment; Chromosomal theory; Linkage; Recombination; Polygenic inheritance; Pleiotropy; Sex determination (Honey Bee & Humans); Mutations; Genetic disorders—Pedigree, Mendelian & chromosomal disorders | 5 |
Molecular Basis of Inheritance | DNA structure; Packaging; Genetic material; RNA world; Replication; Transcription; Genetic code; Mutation; tRNA; Translation; Regulation (Lac Operon); Human Genome Project; DNA fingerprinting | 6 |
Evolution | Origin of life; Evolution theories; Evidence; Adaptive radiation; Biological evolution; Mechanisms; Hardy–Weinberg Principle; Evolution of man | 3 |
Human Health & Disease | Common human diseases; Immunity—innate & acquired; Vaccination; Allergies; Autoimmunity; Immune system; AIDS; Cancer; Drug/alcohol abuse—effects & prevention | 6 |
Microbes in Human Welfare | Microbes in household & industrial products—beverages, antibiotics, enzymes; Sewage treatment; Biogas; Biocontrol agents; Biofertilisers | 5 |
Biotechnology – Principles & Processes | Principles; Tools—restriction enzymes, vectors, competent host; rDNA processes—DNA isolation, cutting, PCR, insertion, gene product recovery, downstream processing | 4 |
Biotechnology & Its Applications | Applications in agriculture; Applications in medicine—insulin, gene therapy, molecular diagnosis, transgenic animals; Ethical issues | 4 |
Organisms & Population | Population attributes; Population growth; Life history variation; Population interactions | 4 |
Ecosystem | Structure & function; Productivity; Decomposition; Energy flow; Ecological pyramids | 5 |
Biodiversity & Conservation | Biodiversity in Earth & India; Patterns; Importance; Loss of biodiversity; Conservation | 3 |
Download RBSE 12th Biology Previous Year Question Paper
RBSE Class 12 Biology Question Paper Pattern 2025-26
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The Biology question paper will consist of six types of questions throughout. You can check out the updated question paper pattern from the table given below:
S.No. | Type of Question | Number of Questions | Marks per Question | Total Marks |
|---|---|---|---|---|
1 | Multiple Choice Questions (MCQ) | 18 | ½ | 09 |
2 | Very Short Answer | 10 | ½ | 05 |
3 | Short Answer Type-I | 10 | 1 | 10 |
4 | Short Answer Type-II | 10 | 1½ | 15 |
5 | Long Answer Type-I | 3 | 3 | 09 |
6 | Long Answer Type-II | 2 | 4 | 08 |
Total | — | 53 | — | 56 |
After going through the exam pattern, you can continue solving the RBSE Class 12 Biology Model Paper 2025-26 to work on your revision.
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FAQs
Yes, students with a good understanding of the RBSE Class 12 Biology syllabus can score good marks. They can focus on solving the questions within time. The regular practice will help them to score above 50 marks.
You can go through the RBSE Class 12 Biology Exam Pattern 2025-26. After checking the marks, you can set priority for the chapters. You can prepare the chapters and questions from them.
RBSE Class 12 Biology Exam Pattern 2025-26 is useful for students to understand the types of questions asked in the exam and marks allotted to them. This helps students to prepare for board exams accordingly.
Students should first focus on completing the RBSE Class 12 Biology Exam Pattern 2025-26. After this, they should regularly revise the syllabus and solve the previous year question papers. This will help them to analyze their performance, and accordingly, they can focus on the topics that need more attention.
According to the RBSE Class 12 Biology Exam Pattern 2025-26, students will have to answer questions of 1, 1.5, 2, 3, 4, and 5 marks. According to the marks allotted to the questions, students can decide the length of their answers.
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