WBCHSE Class 11 Biological Science Syllabus 2026-27: Topic Wise
Praveen Kushwah30 Sept, 2026
The West Bengal Council of Higher Secondary Education (WBCHSE) prescribes the Biological Science syllabus for Class 11 under the semester system. The theory syllabus is divided into two semesters of 35 marks each, while practical assessment carries 30 marks.
The Class 11 syllabus consists of 20 chapters under five units. Semester 1 covers diversity, structural organisation and cell biology, while Semester 2 focuses on plant and human physiology.
Students should refer to the official syllabus while planning chapter-wise study, revision and practical preparation.
WBCHSE Class 11 Online Batches
WBCHSE Class 11 Biology Syllabus 2026-27 Highlights
The official WBCHSE syllabus specifies 35 marks for Semester 1, 35 marks for Semester 2 and 30 marks for practical assessment.
|
Particulars |
Details |
|
Board |
West Bengal Council of Higher Secondary Education |
|
Class |
11 |
|
Subject |
Biological Science |
|
Course Code |
BIOS |
|
Theory |
70 marks |
|
Semester 1 Theory |
35 marks |
|
Semester 2 Theory |
35 marks |
|
Practical |
30 marks |
|
Total |
100 marks |
|
Total Chapters |
20 |
|
Theory Units |
5 |
WBCHSE Class 11 Biological Science Syllabus 2026-27: Topic-wise
The council distributes marks evenly between theoretical knowledge and practical application. The topic-wise WBCHSE Class 11 Biological Science Syllabus is as follows:
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WBCHSE Class 11 Biological Science Syllabus |
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Section |
Topics |
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Botany |
The Living World |
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Biological Classification |
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Plant Kingdom |
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Structural Organisation in plants (Anatomy) |
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Structural Organisation in plants (Morphology) |
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Cell-The unit of life |
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Cell cycle and cell division |
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Photosynthesis in higher plant |
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Respiration in Plant |
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Plant Growth and Development |
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Zoology |
Animal Kingdom |
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Structural Organisation in Animals |
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Biomolecules |
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Digestion And Absorption |
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Breathing And Respiration |
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Body Fluids And Circulation |
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Excretory Products And Their Elimination |
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Locomotion And Movement |
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Neural Control And Coordination |
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Chemical Coordination And Integration |
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WBCHSE Class 11 Semester-Wise Biological Science Syllabus 2026-27
This section provides an in-depth breakdown of the syllabus chapters across both semesters. Students must review all units to prepare thoroughly for school evaluations and competitive entrance tests.
Semester 1 Biological Science Syllabus
Semester 1 introduces students to the classification of life, anatomical structures, and cellular mechanisms. The table below lists the prescribed chapters and their contents.
|
Unit |
Chapters Included |
Topics Covered |
|---|---|---|
|
Unit I: Diversity of Living Organisms |
The Living World, Biological Classification, Plant Kingdom, Animal Kingdom |
Five kingdoms, taxonomy, biodiversity, plant groups, animal classification |
|
Unit II: Structural Organisation in Plants and Animals |
Morphology of Flowering Plants, Anatomy of Flowering Plants, Structural Organisation in Animals |
Plant organ morphology, internal tissue anatomy, animal tissue systems |
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Unit III: Cell Structure and Functions |
Cell - The Unit of Life, Biomolecules, Cell Cycle and Cell Division |
Cell organelles, cellular enzymes, mitosis, meiosis stages |
Semester 2 Biological Science Syllabus
Semester 2 explores physiological mechanisms in plants and the human body. The table below outlines the core chapters for this semester.
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Unit |
Chapters Included |
Topics Covered |
|---|---|---|
|
Unit IV: Plant Physiology |
Photosynthesis in Higher Plants, Respiration in Plants, Plant Growth and Development |
Photophosphorylation, C3 and C4 cycles, glycolysis, growth regulators |
|
Unit V: Human Physiology |
Digestion and Absorption, Breathing and Exchange of Gases, Body Fluids and Circulation |
Alimentary system, gas transport, cardiac cycle, blood composition |
|
Unit V (Cont.): Human Physiology |
Excretory Products, Locomotion and Movement, Neural and Chemical Coordination |
Kidney function, skeletal movement, nerve conduction, endocrine glands |
Preparation Tips for WBCHSE Class 11 Biology Syllabus
Scoring well in biology requires consistent study habits and active revision. Here are practical tips to prepare the syllabus efficiently:
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Review the syllabus thoroughly at the start of the academic session.
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Create a balanced timetable that allocates sufficient hours to both botany and zoology.
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Practice biological diagrams regularly and label all parts clearly.
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Maintain a complete practical record book and understand each lab experiment.
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Solve sample question papers to improve time management skills.
Related Resources:
WBCHSE Class 11 Biology Syllabus FAQs
How many total chapters are included in the syllabus?
What is the total marks distribution for Class 11 Biology?
Does the Class 11 Biology syllabus help with NEET preparation?
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