Bihar Board Class 12 Biology Answer Key 2026, Download PDF

Bihar Board Class 12 Biology Answer Key 2026: The Bihar School Examination Board (BSEB) organises the Intermediate Annual Examination. 

The Bihar School Examination Board (BSEB) conducted the Class 12 Intermediate Annual Examination for 2024-26, with the Biology exam on February 2, 2026. Checking the answer key helps students evaluate their performance and estimate their scores.

While the official answer key awaits, we have provided the unofficial answer key to match the responses. 

Bihar Board Class 12 Biology Answer Key 2026 Overview

Here are the essential details regarding the Bihar Board Class 12 Intermediate Annual Examination for the 2024-26 session, including information about the Bihar Board Class 12 Biology paper.

Bihar Board Class 12 Biology Answer Key 2026 PDF Download

Bihar Board Class 12 Biology Answer Key 2026 PDF can be downloaded from the official website. The official answer key will be available soon, and in the meantime, we have provided the unofficial answer key. Candidates can match their responses with the help of the given answer key. Click the button below to download-

How To Download Bihar Board Class 12 Biology Answer Key 2026

Students can easily check and download the Bihar Board Class 12 Biology Answer Key 2026 by following a few simple steps on the official websites. This allows for quick verification of answers.

• Step 1: Visit the official websites www.biharboardonline.com or www.biharboard.co.

• Step 2: Look for the link related to "Bihar Board 12th Biology Answer key 2026."

• Step 3: The answer key for all sets (A to J) will be available for download.

Biology Exam Structure

Understanding the Biology exam structure is crucial for students to prepare effectively and evaluate their performance. The paper consists of different types of questions, each with its own marking scheme.

• Objective Questions (Section A): 70 questions, out of which 35 must be answered. Each question carries 1 mark.

• Short Answer Questions (Section B): 20 questions, out of which 10 must be answered. Each question carries 2 marks.

• Long Answer Questions: 6 questions, out of which 3 must be answered. Each question carries 5 marks.

• The total marks for the Biology exam is 70. If more than 35 objective questions are attempted, only the first 35 will be evaluated.

How to Use Bihar Board Class 12 Biology Answer Key 2026

Here’s how to use the Bihar Board Class 12 Biology Answer Key 2026 effectively:

• Download the correct set: Identify your question paper set (A–J) from your OMR sheet and get the matching answer key PDF.

• Match objective answers: Compare your 35 attempted MCQs (out of 70, 1 mark each) with the key; count correct ones for 35 marks. Ignore the subjective for now.

• Calculate estimated score: Add MCQ marks to expected subjective marks (20 short + 15 long answers). Total theory: 70 marks.​

• Spot errors & raise objections: Note mismatches; submit objections online within BSEB’s window (usually 3–5 days post-key).​

• Predict result: Use key + past cutoffs to gauge pass/fail; focus weak topics for re-exam if needed.