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WBCHSE Class 11 Biology Syllabus 2020-21

Biology is all about the study of life, its functions, classifications, evolutions and all other living organisms around us. The best way to understand the concepts covered is to refer to the West Bengal Board Class 11 Biology Syllabus. The main concept of studying Biology is to know about ourselves, body parts, nature around us, etc. It is a vast subject which is composed of many branches, including Anatomy, botany, evolution, zoology, etc. WBCHSE Class 11 Biology Syllabus gives an overview of the topics and concepts taught under the subject for the current academic year, so it is the best resource to refer at the start of an academic year. Referring to the syllabus helps to prepare an effective study plan.

Biology is one of the most challenging and mandatory subjects in Science, which requires hard work. WBCHSE Class 11 Biological Sciences Syllabus is well-prepared by the subject experts under the guidance of the State Board of Education which provides adequate knowledge about each essential topic. WBCHSE Class 11 Biological Sciences Syllabus includes- Structure and function of a cell, plant physiology, human physiology, Diversity of living organisms and lot more.

We at BYJU’S provide the syllabus for WBCHSE Class 11 Biological Sciences along with the mark-wise weightage for every chapter so that students can have a good idea about the pattern of the exam.

Download West Bengal Board Class 11 Biological Sciences Syllabus 2021-22

The syllabus was reduced for the academic year 2021-22, find below details of the topics deleted.

Unitwise Marking Scheme from 2021-22 Syllabus

Unit Name Marks
Unit I: DIVERSITY OF LIVING ORGANISMS 07
Unit II: STRUCTURAL ORGANIZATION OF PLANTS 12
Unit III: CELL: STRUCTURE & FUNCTION 15
Unit IV: PLANT PHYSIOLOGY 18
Unit V: HUMAN PHYSIOLOGY 18

Students of Class 11 West Bengal Board can get the detailed syllabus of Biological Sciences from below:

UNIT – I DIVERSITY OF LIVING ORGANISMS

1. Science of life:– 1.1 Definition and concept of biodiversity.
2. Taxonomy and Systematics:-2.1. Taxonomy and Systematics -Definition. 2.2. Taxonomic hierarchy-(Linnaeus) with Example. 2.3. Binomial nomenclature .
3. Classification of Living Organisms:– 3.1 Five kingdoms of life and the basis of classification of five kingdoms.3.2. Salient features and classification of Monera, Protoctista (Protista), Fungi and Lichens into major groups. 3.3. Virus and Viriods-a brief general account. 3.4 Salient features and classification of plant into major group-Algae,Bryophyt.e Pteridophytes, Gymnosperms and Angiosperm (three to five salient and distinguishing features of each category and at least two examples of each category. 3.5 Angiosperm- classification upto class, characteristic features (three to five) and examples. 3.6 Salient features and classification of Animals – major non chordata upto phyla and chordatas upto class level (three upto five salient features and at least two examples).

Unit – II STRUCTURAL ORGANISATION IN PLANTS AND ANIMALS

4. Structural Organisation in Plants :– 4.1 Tissues (Definition) 4.2 Tissues in plants -Meristematic and Permanent ( Structure and function) 4.3 Inflorescences (Major types- Racemose and Cymose ). 4.4 Morphology of flower (including aestivation and placentation ), fruit.
5. Structural Organisation in Animals:– 5.1 Tissues in animals ( strncture, occu1Tence and function in brief).

Unit-III CELL STRUCTURE AND FUNCTION

6. Cell:– 6.1 Cell envelope- cell membrane and cell wall ( ultrastructure and function) 6.2 cell organelles-Ultrastructure and function: Mitochondria. golgi bodies, ribosomes, lysosomes and plastics.6.3 Ultra structure and function of cytoskeleton, centrioles.6.4. Nucleus – nuclear membrane,nucleoplasm,chromatin,nucleus (Ultrastructure and function).
7. Chemical constitutions of living cell:- 7.1 Biomolecules- structure and function of protein. carbohydrate, lipid and nucleic acid.7.2 Enzyme-types, properties and enzyme action ( lock and key, induced fit model and allosterism).
8. Cell Division :- 8.1 Introduction 8.2 Definition and types 8.3 cell cycle 8.4 Meiosis – Definition, types, process and significance.

Unit- IV PLANT PHYSIOLOGY

9. Movement of water, Food, Nutrition and Gases 9.1 Cell to cell transport- diffusion, facilitated diffusion, active transport.9.2 Plant-water relation-inhibitions, water potential. osmosis and plasmolysis.9.3 Transpiration and guttation, opening and closing of stomata.9.4 Translocation – transport through xylem and phloem. Mass flow hypothesis.
10. Plant Nutrition and Minerals I 0.1-Elementary idea of the Hydroponics I 0.2 Nitrogen metabolism- nitrogen cycle, biological nitrogen fixation.
11. Respiration:• 11.1 Cellular respiration – glycolysis T.C.A cycle and E.T.S ( aerobic) Definition. process and significance.11.2 Energy relations – number of A.T.P. molecules generated in respiration.11.3 Respiratory quotient of nutrients.
12. Photosynthesis :- 12.1 Photosynthetic pigments( elementary idea-structure not required) 12.2 Photochemical and biosynthetic phases of photosynthesis.12.2 Cyclic and non-cyclic photophosphorylation.12.3 Photo respiration 12.4 C 3. and C4 pathways.
13. Plant Growth and Development :– 13.1 Condition of growth-( light, temperature, water, hormone, nutrients only) 13.2 Sequence of development process in a plant cell through charts. 13.3 Growth regulations – auxin, gibberellin cytokinin, ethylene, A.B.A.13.4 seed germination 13.5 Seed dormancy 13.5 Photoperiodism- definition, types of plants on basis of the length of the photoperiod.

Unit- V HUMAN PHYSIOLOGY

14. Digestion and Absorption:-14.1 Structure (in brief) of human alimentary canal including dental arrangement and digestive glands.14.2 Role of the digestive enzymes and the G-1 Hormone in digestion . 14.3 Peristalsis 14.4 Digestion, absorption and assimilation of protein. carbohydrate and fat.
15. Breathing and Respiration:– 15.1 Respiratory system in human( outline) 15.2 Mechanism of breathing and it’s regulation in human . 15.3 Exchange of gases, transport of gases and regulation of respiration.15.4 Respiratory volumes.
16. Body Fluids and Circulation:- 16.1 Composition of Blood( Tabular form) 16.2 Blood groups. ABO Blood groups l 6.3 Coagulation of blood 16.4 Structure of Human heart and blood vessels.16.5 Cardiac cycle 16.6 Cardiac output (stroke volume and minute volume, determination of cardiac output-Fick’s Principle) 16.6 E.C.G (brief idea, no analysis required)
17. Excretory Products and their Elimination.:- 17.1 Modes of excretion -Ammonotelism Ureotelism, Uricotelism ( Definition and Examples) 17.2 Human excretory system- structure and function ( Histology of nephron) 17.3 Urine formation and Osmo­regulation. 17.4 Role of other organs in excretion- Liver, skin, lung and salivary gland.
18. Locomotion and Movement:– 18.1 Skeletal muscle -contractile proteins and muscle contraction. 18.2 Joints
19. Neural control and coordination:-19.1 Central Nervous System, Peripheral Nervous system( P.N.S.) ,and visceral Nervous system. Brain and it’s major parts-cerebral cortex, thalamus , hypothalamus and lymbic system, mid brain, pons, medulla, cerebellum and Spinal cord (function only) , Mode of distribution and function of P.N.S and autonomic nervous system.19.2 Reflex action and Reflex Arc.
20. Chemical Coordination and Regulation. 20.1 Human endocrine system-Hypothalamus, Pituitary. Pineal, Thyroid, Parathyroid, Adrenal, Pancreas, Gonads ( location and function only) 20.2. Mechanism of hormone action ( elementary idea).

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