The ICSE Class 10 Biology (Science Paper 3) exam 2026 is scheduled for Friday, March 13, 2026, from 11:00 AM to 1:00 PM in offline written mode. This 2‑hour paper is conducted by the Council for the Indian School Certificate Examinations (CISCE) and tests students on the complete prescribed Biology syllabus for Class 10.
On this page, the ICSE Class 10th Biology Answer Key 2026 (Unofficial) and the question paper analysis will be updated after the exam so that students can quickly check their responses and estimate their probable marks before the official result is released.
ICSE Class 10 Biology 2026 – Exam Highlights
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Exam Board: Council for the Indian School Certificate Examinations (CISCE)
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Class: ICSE Class 10
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Subject: Biology - Science Paper 3
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Exam Date: Friday, March 13, 2026
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Exam Time: 11:00 AM to 1:00 PM (2 hours)
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Exam Duration: 2 hours (plus reading time as per instructions on the paper)
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Mode of Exam: Offline, pen‑and‑paper (written)
The Biology paper is usually held in the second half of the day as part of the ICSE board exam timetable, and students must carry their admit card and school ID to the centre.
ICSE Class 10th Biology Answer Key 2026 (Unofficial)
| Exam Date | Status | Link |
| 13th March 2026 | To be Announced | Click Here |
ICSE Class 10 Biology Question Paper Pattern 2026
The Science Paper 3 question paper is designed to check conceptual clarity, diagram skills and application‑based understanding. While the exact blueprint is shared by CISCE in the official syllabus and specimen paper, the pattern typically includes:
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Section I: Short‑answer questions covering the entire syllabus
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Section II: Long‑answer and structured questions with internal choices
Students can expect questions from key units like:
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Cell division and genetics
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Plant physiology (photosynthesis, transpiration, respiration)
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Human anatomy and physiology (circulatory, respiratory, nervous, excretory systems)
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Health, hygiene and disease
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Environment, ecosystems and pollution
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Basic principles of biotechnology and waste management
Understanding how marks are distributed across diagrams, labelling and explanations is crucial, so candidates should carefully read the instructions printed on the question paper before attempting answers.
ICSE Class 10th Biology Answer Key 2026 (Unofficial)
Once the exam concludes at 1:00 PM on March 13, 2026, subject experts will prepare an unofficial ICSE Biology answer key based on the original Science Paper 3.
Planned details of the answer key:
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Question‑wise answers for all compulsory questions
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Correct options/points for short‑answer questions
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Key headings and important steps for long‑answer and diagram‑based questions
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Easy‑to‑download PDF format for students and teachers
This unofficial answer key will help you:
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Cross‑check your responses quickly
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Get an idea of your expected score
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Identify mistakes in theory, diagrams or definitions for future improvement
Note: This key will be purely unofficial and meant only for self‑evaluation. Final marks will depend entirely on the official checking and marking scheme of CISCE.
How to Use the ICSE Biology 2026 Unofficial Answer Key
You can follow these simple steps once the answer key is uploaded:
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Keep your memory of the attempted question paper or a copy of the paper (if given back by school).
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Match each question with the unofficial Biology answer key.
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Award yourself marks strictly according to the pattern and length expected for each question.
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Total your marks to get an approximate score for Science Paper 3.
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Use this estimate only as a reference while waiting for the official ICSE Class 10 result.
Using the key in this way will give you a realistic sense of performance and also highlight areas like diagrams, definitions and reasoning where you can improve for future exams or higher classes.
Exam‑Day Tips for ICSE Class 10 Biology (Science Paper 3)
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Reach the exam centre at least 30- 40 minutes early to settle down comfortably.
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Read the entire question paper during the initial reading time and decide the order in which you will attempt questions.
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Start with questions you find easiest to build confidence and save tougher questions for later.
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Draw neat, labelled diagrams wherever relevant; they often carry easy marks.
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Keep the last 10- 15 minutes for revision, checking question numbers, spellings of biological terms, and labelling in diagrams.
