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Class 11 Biology Syllabus 2022-2023

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Class 11 Biology Syllabus 2022-2023

On this page, you will find the detailed Biology class 11 CBSE Syllabus. Students should consult CBSE 11 Biology syllabus 2022-23 before starting their preparations. Keep visiting this page for all the latest updates from CBSE.

CBSE Syllabus Class 11 Biology 2023: The Central Board of Secondary Education has released the Class 11 Biology Syllabus. CBSE 11 Biology syllabus consists of five units. CBSE Class 11 Biology Syllabus 2022-2023 consists of 70 marks for the theoretical portion and 30 marks for the practical portion. Each student will be given three hours to complete the Class 11 Biology question paper.

Having a clear understanding of the CBSE class 11 Biology Syllabus 2022-23 is crucial to exam preparation. A description of the course structure is provided along with information about the distribution of marks for each topic and subtopic as well as the time required for each topic to be covered. The Biology question paper is based on the syllabus. It is therefore essential for students to review the CBSE Class 11 Biology Syllabus 2023 before creating a study plan.

Besides helping students to prepare for the exam, the class 11 Biology syllabus for NEET will also help them prepare for the NEET exam. Thus, students need to be familiar with the newly updated Biology syllabus. To assist students, SpeEdLabs offers the Biology Class 11 CBSE Syllabus for the academic year 2022-23. At SpeEdLabs, you can download the CBSE class 11 Biology Syllabus pdf for free.

Class 11 Biology Syllabus 2022-2023

CBSE has completed the term-wise exams for classes 9th-12th. Consequently, students must sit for the annual exam at the end of the academic year only. We have provided the Class 11 Biology Syllabus 2022-2023 below. This latest syllabus must be followed while studying Biology.

For the CBSE Class 11 Biology Annual Exam 2023, students should carefully note the unit-wise weightage and prescribed content. It is also important that they complete their practicals based on the details in the new Biology syllabus.

The syllabus for CBSE Class 11 Biology 2023 includes Diversity of Living Organisms, Plant and Animal Structure and Function, Plant Physiology, and Human Physiology. Check out the table below:

Serial No. Unit Name 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
  Total 70


Biology Class 11 Revised Syllabus 2022-2023

We have provided the chapter-by-chapter CBSE Class 11 Biology Syllabus 2023 here. Students need to go through the entire syllabus and pick those units that have the highest weightage first. Below you will find CBSE Class 11 Biology Syllabus 2023:

Unit I: Diversity of Living Organisms

  • Chapter 1: The Living World

Biodiversity; Need for classification; three domains of life; taxonomy and systematics; concept of species and taxonomic hierarchy; binomial nomenclature.

  • Chapter 2: Biological Classification

Five kingdom classification; Salient features and classification of Monera, Protista and Fungi into major groups; Lichens, Viruses and Viroids.

  • Chapter 3: Plant Kingdom

Classification of plants into major groups; Salient and distinguishing features and a few examples of Algae, Bryophyta, Pteridophyta, Gymnosperm (Topics excluded – Angiosperms, Plant Life Cycle and Alternation of Generations).

  • Chapter 4: Animal Kingdom

Salient features and classification of animals, non-chordates up to phyla level and chordates up to class level (salient features and at a few examples of each category). (No live animals or specimens should be displayed).

Unit II: Structural Organization in Animals and Plant

  • Chapter 5: Morphology of Flowering Plants

Morphology of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed. Description of family Solanaceae.

  • Chapter 6: Anatomy of Flowering Plants

Anatomy and functions of tissue systems in dicots and monocots.

  • Chapter 7: Structural Organisation in Animals

Morphology, Anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of frogs.

Unit III: Cell: Structure and Function

  • Chapter 8: Cell-The Unit of Life

Cell theory and cell as the basic unit of life, structure of prokaryotic and eukaryotic cells; Plant cell and animal cell; cell envelope; cell membrane, cell wall; cell organelles – structure and function; endomembrane system, endoplasmic reticulum, Golgi bodies, lysosomes, vacuoles, mitochondria, ribosomes, plastids, microbodies; cytoskeleton, cilia, flagella, centrioles (ultrastructure and function); nucleus.

  • Chapter 9: Biomolecules

Chemical constituents of living cells: biomolecules, structure and function of proteins, carbohydrates, lipids, nucleic acids; Enzyme – types, properties, enzyme action. (Topics excluded: Nature of Bond Linking Monomers in a Polymer, Dynamic State of Body Constituents – Concept of Metabolism, Metabolic Basis of Living, and The Living State).

  • Chapter 10: Cell Cycle and Cell Division

Cell cycle, mitosis, meiosis and their significance.

Unit IV: Plant Physiology

  • Chapter 13: Photosynthesis in Higher Plants

Photosynthesis as a means of autotrophic nutrition; site of photosynthesis, pigments involved in photosynthesis (elementary idea); photochemical and biosynthetic phases of photosynthesis; cyclic and non-cyclic photophosphorylation; chemiosmosis hypothesis; photorespiration; C3 and C4 pathways; factors affecting photosynthesis.

  • Chapter 14: Respiration in Plants

Exchange of gases; cellular respiration – glycolysis, fermentation (anaerobic), TCA cycle and electron transport system (aerobic); energy relations – number of ATP molecules generated; amphibolic pathways; respiratory quotient.

  • Chapter 15: Plant – Growth and Development

Seed germination; phases of plant growth and plant growth rate; conditions of growth; differentiation, dedifferentiation and redifferentiation; sequence of developmental processes in a plant cell; growth regulators – auxin, gibberellin, cytokinin, ethylene, ABA;

Unit V: Human Physiology

  • Chapter 17: Breathing and Exchange of Gases

Respiratory organs in animals (recall only); Respiratory system in humans; mechanism of breathing and its regulation in humans – exchange of gases, transport of gases and regulation of respiration, respiratory volume; disorders related to respiration – asthma, emphysema, occupational respiratory disorders.

  • Chapter 18: Body Fluids and Circulation

Composition of blood, blood groups, coagulation of blood; composition of lymph and its function; human circulatory system – Structure of human heart and blood vessels; cardiac cycle, cardiac output, ECG; double circulation; regulation of cardiac activity; disorders of circulatory system – hypertension, coronary artery disease, angina pectoris, heart failure.

  • Chapter 19: Excretory Products and Their Elimination

Modes of excretion – ammonotelism, ureotelism, uricotelism; human excretory system – structure and function; urine formation, osmoregulation; regulation of kidney function – renin – angiotensin, atrial natriuretic factor, ADH and diabetes insipidus; role of other organs in excretion; disorders – uraemia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, kidney transplant.

  • Chapter 20: Locomotion and Movement

Types of movement – ciliary, flagellar, muscular; skeletal muscle, contractile proteins and muscle contraction; skeletal system and its functions; joints; disorders of muscular and skeletal systems – myasthenia gravis, tetany, muscular dystrophy, arthritis, osteoporosis, gout.

  • Chapter 21: Neural Control and Coordination

Neuron and nerves; Nervous system in humans – central nervous system; peripheral nervous system and visceral nervous system; generation and conduction of nerve impulse.

  • Chapter 22: Chemical Coordination and Integration

Endocrine glands and hormones; human endocrine system – hypothalamus, pituitary, pineal, thyroid, parathyroid, adrenal, pancreas, gonads; mechanism of hormone action (elementary idea); role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders; dwarfism, acromegaly, cretinism, goitre, exophthalmic goitre, diabetes, Addison’s disease.

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