West Bengal HS 4th Sem Biological Science (BIOS) Question Paper 2026 PDF Download with Solution (Feb 20)
WBCHSE Class 12 Semester 4th Biological Science question paper 2026: WBCHSE Class 12 Semester 4 Board examinations mark a defining phase in a student’s academic journey and the WBCHSE Class 12 Biological Science Examination 2026 is no exception. As one of the most important subjects in the Science stream, Biological Science will play an important role to shape students’ understanding of living systems and prepare them for higher studies in NEET, environmental, and more. The WBCHSE Class 12 Semester 4 examination is conducted by the West Bengal Council of Higher Secondary Education (WBCHSE).
This Story also Contains
- West Bengal HS 4th Sem BIOS Overview 2025–26
- How to download West Bengal HS 4th Sem BIOS Question Papers 2026?
- West Bengal HS 4th Sem BIOS Question Paper 2026: Download PDF
- West Bengal HS Semester 4th Biological Science Previous Year Question Paper: Download PDF
- West Bengal Class 12 Biological Science Model Question Paper 2025-26: Download PDF
- WBCHSE Class 12 Semester 4th Biological Science Answer Key 2026 – Download PDF
- West Bengal HS 4th Sem BIOS Exam Pattern 2025–26
- Preparation Tips for WBCHSE Class 12 Biological Science Exam 2025–26
For the academic session 2025–26, the WBCHSE Higher Secondary examinations are scheduled from February 12, 2026 to February 27, 2026. As per the official WBCHSE Class 12 Semester 4 examination routine, the Class 12 Biological Science paper will be held on February 20, 2026. The Biological Science examination will be conducted in offline mode, and students will be given two hours, from 10:00 AM to 12:00 Noon, to attempt the paper at their respective examination centres. Interested students can read this article to get complete details about the WBCHSE Class 12 Biological Science Overview, WBCHSE Semester 4 Biological Science question Papers, Answer Keys, Exam Pattern 2025–26, Preparation Tips, and Frequently Asked Questions.
West Bengal HS 4th Sem BIOS Overview 2025–26
Students will get to know about the exam pattern, marking scheme, important topics, question paper structure, and preparation strategy for the WBCHSE Class 12 Semester 4 Biological Science Examination 2025–26.
Particulars | Details |
Board Name | |
Class | 12 (Higher Secondary) |
Stream | Science |
Subject | Biological Science |
Academic Session | 2025–26 |
Exam Dates | February 12, 2026 – February 27, 2026 |
Biological Science Exam Date | February 20, 2026 |
Exam Shift | Morning Shift |
Exam Timing | 10:00 AM to 11:00 AM |
Exam Duration | 2 Hours |
Exam Mode | Offline (Pen and Paper) |
Total Marks | 70 (Theory) + Internal Assessment as per WBCHSE |
Question Types | Very Short Answer, Short Answer, Numerical, Long Answer |
Syllabus | WBCHSE-prescribed syllabus |
How to download West Bengal HS 4th Sem BIOS Question Papers 2026?
Students should follow the steps given below to download the WBCHSE Class 12 Biological Science question paper 2026:
Check the following table and click on the relevant link of WBCHSE Class 12 Biological Science question papers.
It will open a new page, and click on the download button.
A PDF file that comprises WBCHSE Class 12 Biological Science question papers will start to download.
Start practising with the WBCHSE Class 12 Biological Science question papers for better preparation for the exams.
West Bengal HS 4th Sem BIOS Question Paper 2026: Download PDF
The WBCHSE Class 12 Biological Science Question Paper 2026 will be made available in PDF format after the examination. Students can download the WBCHSE Class 12 Semester 4 Biological Science question paper to understand the exam pattern, question types, and difficulty level. Students can access the WBCHSE Class 12 Semester 4 Biological Science question paper PDF will help in answer review, performance analysis, and future exam preparation.
Exam Date | Subject Title | Download Question Paper PDF |
February 20, 2026 | WBCHSE Class 12 Biological Science Question Paper 2026 | To be available |
West Bengal HS Semester 4th Biological Science Previous Year Question Paper: Download PDF
The West Bengal HS Semester 4 Biological Science Previous Year Question Paper is an important resource for board exam preparation. The WBCHSE Class 12 previous year question papers are based on the WBCHSE Class 12 syllabus and reflect the actual exam pattern.
WBCHSE Class 12 Biological Science Question Paper 2025 | |
WBCHSE Class 12 Biological Science Question Paper 2024 | |
WBCHSE Class 12 Biological Science Question Paper 2023 | To be available |
WBCHSE Class 12 Biological Science Question Paper 2022 | |
WBCHSE Class 12 Biological Science Question Paper 2020 | To be available |
West Bengal Class 12 Biological Science Model Question Paper 2025-26: Download PDF
The West Bengal Class 12 Biological Science Model Question Paper 2025–26 helps students prepare properly for the board examination. Students must prepare according to the latest syllabus, the WBCHSE Class 12 model papers play an important role in improving performance in the WBCHSE Class 12 result.
WBCHSE Class 12 Biological Science Model Paper 2026 |
WBCHSE Class 12 Semester 4th Biological Science Answer Key 2026 – Download PDF
The WBCHSE Class 12 Semester 4 Biological Science Answer Key 2026 will be released after the examination in PDF format. The WBCHSE Class 12 Semester 4 Answer Key enables students to verify their responses and estimate their expected scores.
Subject Title | Download Answer Key PDF |
WBCHSE Class 12 Biological Science Answer Key 2026 | To be available |
West Bengal HS 4th Sem BIOS Exam Pattern 2025–26
The WBCHSE Class 12 Biological Science Exam Pattern 2025–26 outlines the structure and marking scheme of the question paper. It is prepared as per the WBCHSE Class 12 exam pattern, covering different types of questions and marks distribution.
Section | Type of Questions | Number of Questions | Marks per Question | Total Marks |
A | Multiple Choice Questions (MCQs) | 14 | 1 | 14 |
B | Very Short Answer Questions | 4 | 1 | 4 |
C | Short Answer Questions | 5 | 2 | 10 |
D | Descriptive Questions | 9 | 3 | 27 |
E | Long Answer Questions | 3 | 5 | 15 |
Total | — | — | — | 70 Marks |
Key Highlights:
The paper follows the official WBCHSE Class 12 exam pattern.
Internal choices are provided in selected questions.
Diagrams must be neat and properly labelled wherever required.
West Bengal Board HS PYQ's
Access West Bengal Board HS Previous Year Question Papers to practice effectively, understand exam trends, and boost your preparation for better scores.
Download NowPreparation Tips for WBCHSE Class 12 Biological Science Exam 2025–26
Students must follow the WBCHSE Class 12 syllabus strictly and avoid studying unnecessary or out-of-syllabus topics.
Students must prepare clear and well-labelled diagrams to score full marks in descriptive biological questions.
Students must practice WBCHSE Class 12 previous year question papers to understand the exam pattern and frequently repeated questions.
Students must revise important definitions, processes, and scientific terms regularly to improve answer quality.
Frequently Asked Questions (FAQs)
Q: When will the WBCHSE Class 12 Biological Science exam be held in 2025–26?
A:
The WBCHSE Class 12 Biological Science exam will be held on February 20, 2026.
Q: Can students download WBCHSE Class 12 Biological Science papers in PDF format?
A:
Yes, students can download the WBCHSE Class 12 Biological Science papers which will be available in PDF for practice.
Q: How does the WBCHSE Class 12 Biological Science previous year question paper help students?
A:
The WBCHSE Class 12 Biological Science previous year question paper will help students understand the exam pattern, manage time, and improve confidence.
Q: Are model question papers available for the WBCHSE Class 12 Biological Science Exam?
A:
Yes, model question papers will be provided for each subject for WBCHSE Class 12 Biological Science Exam.
Articles
Related Stories
|
Upcoming School Exams
Certifications By Top Providers
Explore Top Universities Across Globe
Questions related to West Bengal 12th
On Question asked by student community
Have a question related to West Bengal 12th ?
The West Bengal Class 12 Semester 3 (Half-Yearly) exam results are expected to be declared in October or November 2025. Students can check their results once released using their Roll Number and Date of Birth. Make sure to keep these details ready for easy access.
here is the link for
Hi dear candidate,
The Bengali language question papers for practice are available to download on our official website in PDF format.
Kindly refer to the links attached below:
West Bengal 10th Sample Paper – Bengali 2nd Language
TBSE Class X Bengali Sample Question Paper
BEST REGARDS
Hello aspirant,
The WB 12th syllabus 2025 has been made available on the official website, wbchse.nic.in, by the West Bengal Council of Higher Secondary Education. Since it is always essential to fully understand the syllabus before taking the test, students preparing for the West Bengal higher secondary exam 2025 can
Hello Suman , Hope your doing great . First thing what are you asking . This question was not fully completed question.
Hello Aspirant,
For IIT Kharagpur there is no requirement of JEE-Main score because is based on the JEE-Advance score but to sit for JEE-Advance you need to qualify JEE-Main and JEE-Main qualifying cut-off is released along with the result of both the sessions of JEE-Main 2022.
As the cut-offs are
Applications for Admissions are open.
As per latest syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
JEE Main Important Chemistry formulas
Get nowAs per latest syllabus. Chemistry formulas, equations, & laws of class 11 & 12th chapters
JEE Main high scoring chapters and topics
Get nowAs per latest 2024 syllabus. Study 40% syllabus and score upto 100% marks in JEE
JEE Main Important Mathematics Formulas
Get nowAs per latest syllabus. Maths formulas, equations, & theorems of class 11 & 12th chapters
West Bengal 12th Notifications
Never miss West Bengal 12th update
Get timely West Bengal 12th updates directly to your inbox. Stay informed!