Bihar Board is going to start its inter exams on February 1, 2025. Science stream students will write their first paper in Biology under the BSEB Class 12 Board Exam 2025.
On the last day before the exam, students should practice the latest BSEB Class 12 Biology Model Paper 2025 to get familiar with the exam format.
Bihar Board 12th Biology Model Paper PDF Download
Understanding the structure of the bseb annual exam, several sections, the type of questions asked, and the marking scheme will help in formulating the right strategy for time management and writing the exam confidently.
BSEB Class 12 Biology Theory Exam Pattern
Unit | Unit Name | Marks |
---|---|---|
Unit 1 | Sexual Reproduction | 06 |
Unit 2 | Genetics and evolution | 18 |
Unit 3 | Biology & Human Welfare | 18 |
Unit 4 | Biotechnology and its applications | 18 |
Unit 5 | Ecology and environment | 10 |
Total | 70 |
Check the Bihar Board Class 12 Biology marking scheme given above for the academic year 2023-25.
Bihar Board Class 12 Biology Final Exam Question Paper Pattern
Sections | Total Number of Questions | Type of Questions | Questions To Be Answered | Marks |
---|---|---|---|---|
A | 70 | Objective Questions | 35 | 35 x 1 = 35 |
B | 20 6 | Short Answer Type Questions Long-answer Type Questions | 10 | 10 x 2 = 20 |
3 | 3 x 5 = 15 | |||
Total Marks | 70 | |||
Practical | 30 |
BSEB Class 12 Biology Practical Exam Pattern
Particulars | Marks Allotted |
---|---|
1x major experiment | 5 marks |
1x minor experiment | 4 marks |
Slide preparation | 5 marks |
Spotting work | 7 marks |
Practical record and viva | 4 marks |
Project work record and viva | 5 marks |
Total | 30 marks |
Bihar Board Inter Class Biology Model Paper 2025
BSEB Biology Exam Date | February 1, 2025 |
---|---|
Subject Name | Biology |
Subject Code | 119 |
Exam Timing | 3 Hours 15 minutes |
Entry Last Time | 9:00 AM |
Total Marks | 100 |

Bihar Board Class 12 Biology Model Question Paper 2025
- The model paper is divided into two sections – Section A and Section B.
- Section B contains 20 short answer questions out of which 10 questions are to be answered. Each question is of 2 marks.
- Section A contains 70 objective-type questions, out of which 35 questions are to be answered. Each question is of 1 mark.
- Section B also has 6 long answer questions, each of 5 marks, out of which any 3 questions are to be answered.
Bihar Board 12 Biology Important Topics
- Unit 1: Reproduction
- Sexual Reproduction in Flowering Plant
- Fertilization, implantation
- Male and Female Reproductive System, production of gametes.
- Reproductive health control, contraception, and STDs.
- Unit 2: Genetics and Evolution
- Deviations from the Mendelism ratio
- Linkage and crossing over
- Sex determination in humans
- DNA, replication, transcription, translation
- Evolution: Theories and evidence
- Blood groups in human beings: Inheritance pattern of hemophilia.
- Gene expression and regulation
- DNA Fingerprinting
- Unit 3: Biology & Human Welfare
- Cancer and AIDS
- Microbes in Human Welfare
- Adolescence and drug and alcohol abuse
- Single Cell Protein
- Basic concepts of immunology, vaccines,
- Biofortification
- Unit 4: Biotechnology and its Applications
- Recombinant DNA technology: molecular diagnostic technique.
- Biotechnology Process
- Applications in Health & Medicines
- Genetically modified (GM) organisms
- Applications in Agriculture
- Biosafety issues
- Unit 5: Ecology and Environment
- Organisms and Environment
- Nutrient Cycling
- Ecosystem
- Biodiversity and its Conservation
- Environmental Issues

Get here the direct link to download the latest BSEB 12th Biology Model Paper 2025 to optimize your preparation for the BSEB Intermediate Biology Exam 2025.
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