Central Board of Secondary Education (CBSE) releases the latest CBSE Class 11 Biology Syllabus 2023-24. This latest CBSE Biology Syllabus 2023-24 Class 11 is beneficial for CBSE Board Exam 2024. All important topics related to CBSE Class 11th Biology Syllabus 2023-24 are discussed in this article. We also provide the direct link to download CBSE Class 11 Biology Syllabus 2024-24 PDF.
Students of class 11 can download the new CBSE Biology Syllabus 2023-24 through the official website of CBSE at cbseacademic.nic.in or cbse.gov.in or the direct link is given below. After downloading this latest CBSE Class 11 Syllabus the student should go through all the topics thoroughly.
The present curriculum provides students with updated concepts along with extended exposure to contemporary areas of the subject. The course aims to emphasize the underlying principles that underlie the relationship of biology with animals, plants, and microorganisms, as well as other areas of knowledge.
The format allows a simple, clear, sequential flow of concepts. It links the study of biology to real life through developments in the use of technology. It links discoveries and innovations in biology to everyday life such as the environment, industry, health, and agriculture. The updated curriculum also focuses on understanding and applying scientific principles, while ensuring that ample opportunities and scope are available within its framework to learn and appreciate basic concepts.
It is expected that the students will get to know about the different branches of biology in a more relevant and systematic manner in the curriculum as they study its various units.
CBSE Class 11 Biology Syllabus 2023-24 Course Structure
| Unit No. | 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 |
| Total | 70 |
Unit I: Diversity of Living Organisms
Chapter-1: The Living World
Biodiversity; Need for classification; Three domains of life; taxonomy and systematics; the concept of species and taxonomical hierarchy; binomial nomenclature.
Chapter-2: Biological Classification
Five kingdom classifications; 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, Gymnospermae (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 a few examples of each category).
(No live animals or specimens should be displayed.)
Unit II: Structural Organization in Plants and Animals
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 the frog.
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, 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; chemiosmotic 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, differentiation, 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 the 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 the 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; the role of other organs in excretion; disorders – uremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, a 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
Neurons and nerves; Nervous system in humans – central nervous system; the 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); the role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders; dwarfism, acromegaly, cretinism, goiter, exophthalmic goiter, diabetes, Addison’s disease.
Note: Diseases related to all the human physiological systems are to be taught in brief.
CBSE Class 11 Biology Practical (3 hours/ 30 Marks)
| Evaluation Scheme | Marks |
| One Major Experiment Part A (Experiment No- 1,3,7,8) | 05 |
| One Minor Experiment Part A (Experiment No- 6,9,10,11,12,13) | 04 |
| Slide Preparation Part A (Experiment No- 2,4,5) | 05 |
| Spotting Part B | 7 |
| Practical Record + Viva Voce Project Record + Viva Voce | 4 + 5 |
| Total | 30 Marks |
A: List of Experiments
- Study and describe locally available common flowering plants, from the family Solanaceae (Poaceae, Asteraceae, or Brassicaceae can be substituted in case of particular geographical location) including dissection and display of floral whorls, anther, and ovary to show
the number of chambers (floral formulae and floral diagrams), type of root (tap and adventitious); type of stem (herbaceous and woody); leaf (arrangement, shape, venation, simple, and compound). - Preparation and study of T.S. of dicot and monocot roots and stems (primary).
- Study of osmosis by potato osmometer.
- Study of plasmolysis in epidermal peels (e.g. Rhoeo/lily leaves or flashy scale leaves of onion bulb).
- Study of distribution of stomata on the upper and lower surfaces of leaves.
- Comparative study of the rates of transpiration in the upper and lower surfaces of leaves.
- Test for the presence of sugar, starch, proteins, and fats in suitable plant and animal materials.
- Separation of plant pigments through paper chromatography.
- Study of the rate of respiration in flower buds/leaf tissue and germinating seeds.
- Test for the presence of urea in urine.
- Test for the presence of sugar in the urine.
- Test for the presence of albumin in the urine.
- Test for the presence of bile salts in the urine
B. Study and Observe the following (spotting):
- Parts of a compound microscope.
- Specimens/slides/models and identification with reasons – Bacteria, Oscillatoria, Spirogyra, Rhizopus, mushroom, yeast, liverwort, moss, fern, pine, one monocotyledonous plant, one dicotyledonous plant, and one lichen.
- Virtual specimens/slides/models and identifying features of – Amoeba, Hydra, liver fluke, Ascaris, leech, earthworm, prawn, silkworm, honey bee, snail, starfish, shark, rohu, frog, lizard, pigeon, and rabbit.
- Mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides.
- Different types of inflorescence (cymose and racemose).
- Human skeletons and different types of joints with the help of virtual images/models only.
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