CBSE Class 11 Biology Syllabus 2027 (Subject Code 044) has been released by the Central Board of Secondary Education for the 2026-27 academic session. It is a 100-mark course – 70 marks theory (Diversity of Living Organisms 15, Structural Organization in Plants and Animals 10, Cell: Structure and Function 15, Plant Physiology 12, Human Physiology 18) across a 3-hour exam, plus 30 marks Practicals. Download the official CBSE Class 11 Biology Syllabus PDF and see the full unit-wise breakdown below.
CBSE Class 11 Biology Syllabus 2027 PDF
The complete curriculum is as follows.
CBSE Senior Secondary Syllabus 2027 Biology View Download
CBSE Class 11 Biology Syllabus 2027 – Marks Weightage (Unit-wise)
The CBSE Class 11 Biology exam carries 100 total marks – 70 for the theory paper and 30 for Practicals.
| Unit | Title | Marks |
|---|---|---|
| I | Diversity of Living Organisms | 15 |
| II | Structural Organization in Plants and Animals | 10 |
| III | Cell: Structure and Function | 15 |
| IV | Plant Physiology | 12 |
| V | Human Physiology | 18 |
| Theory Total | 70 | |
| – | Practicals | 30 |
| Total | 100 |
CBSE Class 11 Biology Syllabus 2027 – Topics Covered (Unit-wise)
The following chapters and topics are prescribed for CBSE Class 11 Biology under each unit.
Prescribed Textbook: Biology, Class XI, published by NCERT, along with related NCERT manuals, the Biology Supplementary Material (Revised) and Reading Material Biology Class XI available on the CBSE website.
CBSE Class 11 Biology Syllabus 2027 – Practical Assessment
The Practical exam for CBSE Class 11 Biology carries 30 marks and is of 3 hours duration.
Experiments include the study of flowering plants (family Solanaceae), T.S. of dicot and monocot roots/stems, osmosis by potato osmometer, plasmolysis in epidermal peels, stomatal distribution, transpiration rate comparison, tests for sugar/starch/proteins/fats, separation of plant pigments by paper chromatography, respiration rate studies, and urine tests (urea, sugar, albumin, bile salts). Spotting covers microscope parts, classification specimens (Bacteria to lichen), animal specimens (Amoeba to rabbit), mitosis slides, inflorescence types, and the human skeleton.
CBSE Class 11 Biology Syllabus 2027 – Exam Pattern
The CBSE Class 11 Biology theory paper (70 marks, 3 hours) is assessed on the following competency distribution, as prescribed by CBSE for Biology (044).
| Competency | Description | Weightage |
|---|---|---|
| Demonstrate Knowledge and Understanding | State, name, list, identify, define, suggest, describe, outline, summarize | 50% |
| Application of Knowledge / Concepts | Calculate, illustrate, show, adapt, explain, distinguish | 30% |
| Analyse, Evaluate and Create | Interpret, analyse, compare, contrast, examine, evaluate, discuss, construct | 20% |
Question typology includes VSA (including MCQs), Assertion-Reasoning type questions, SA, LA-I, LA-II, and Source-based/Case-based/Passage-based/Integrated assessment questions, with an internal choice of approximately 33% provided across the paper.
CBSE Class 11 Biology Syllabus 2027 – Continue Your Preparation
Once you have reviewed the syllabus, practice with the CBSE Class 11 Sample Papers to prepare for your exams.
Frequently Asked Questions
The CBSE Class 11 Biology Syllabus 2027 (Subject Code 044) is the official curriculum released by CBSE for the 2026-27 academic session. It covers five units – Diversity of Living Organisms, Structural Organization in Plants and Animals, Cell: Structure and Function, Plant Physiology and Human Physiology – for 70 theory marks, plus 30 marks Practicals, totaling 100 marks.
The subject code for Biology in CBSE Class 11 and Class 12 is 044.
The CBSE Class 11 Biology theory exam is of 70 marks (3 hours), plus 30 marks for Practicals, making a total of 100 marks.
The prescribed textbook is Biology, Class XI, published by NCERT, along with the Biology Supplementary Material (Revised) and Reading Material Biology Class XI available on the CBSE website.
Unit V – Human Physiology carries the highest weightage with 18 marks, followed by Unit I (Diversity of Living Organisms) and Unit III (Cell: Structure and Function), each worth 15 marks.
CBSE Class 11 Syllabus 2026-27 (All Subjects)
You study more subjects besides Biology in 11th class. The subject-wise syllabus for CBSE Class 11 students is as follows.
CBSE Syllabus 2026-27 (Class-wise)
The class-wise syllabus for CBSE board students is as follows.
CBSE Class 11 Biology Syllabus 2027 – An Overview
The important things to know about this curriculum are as follows.
| Aspects | Details |
|---|---|
| Education Board | CBSE |
| Class | Class 11 |
| Subject | Biology |
| Study Material Here | CBSE Syllabus for Class 11 Biology |
| All Curriculum for This Class | CBSE Syllabus for Class 11 |
| All Curriculum for This Board | CBSE Syllabus |
| Full Name of CBSE | Central Board of Secondary Education |
| NCERT Books | NCERT Books for Class 11 |
| NCERT Solutions | NCERT Solutions for Class 11 |
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