Punjab Board PSEB Class 11 Biology Syllabus 2025-26, Download FREE PDF

For every subject in Class 11, the Punjab School Education Board (PSEB) has published the most recent curriculum. Based on the recently published curriculum, the yearly test will be administered during the current academic year 2025–2026.

We have included the PSEB syllabus for the Class 11 Biology course in this page. The syllabus consists of 19 chapters divided into 5 divisions. Students will learn about the year's chapter-by-chapter assigned topics as well as the specifics of the internal evaluation and practical examination. To properly arrange their study, they should go over the entire syllabus and comprehend the breadth of each subject. View the PSEB Class 11 Biology Syllabus 2025–2026 in PDF format by downloading it below.

PSEB Class 11 Biology Syllabus: Key Highlights

PSEB Class 11 Biology: Detailed Syllabus 2025-26

Check the table below to know the full syllabus of Punjab Board Class 11 Biology:

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 taxonomical 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, Gymnospermae and Angiospermae brief account. 

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 Plants 

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. 2025-26 

Chapter-9: Biomolecules Chemical constituents of living cells: biomolecules, structure and function of proteins, carbohydrates, lipids, nucleic acids; Enzyme - types, properties, enzyme action. 

Chapter-10: Cell Cycle and Cell Division Cell cycle, mitosis, meiosis and their significance

Unit-IV Plant Physiology 

Chapter 11 : 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 now-cyclic photophosphorylation; chemiosmotic hypothesis; photorespiration; C3 and C4 pathways; factors affecting photosynthesis. 

Chapter12: 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. 

Chapter13: 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 14: 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-15: 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-16: 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; disordersuremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, kidney transplant. 

Chapter -17: 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-18: 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-19: 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, goiter, exophthalmic goiter, diabetes, Addison’s disease. 

Note: Diseases related to all the human physiological systems to be taught in brief.  

PSEB Class 11 Biology Syllabus: Practical Work 2025-26

Time: 3 Hours 

Max Marks: 25

A: List of Experiments 

1. Study and describe locally available common flowering plants, from 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 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). 

2. Preparation and study of T.S. of dicot and monocot roots and stems (primary). 

3. Study of osmosis by potato osmometer. 

4. Study of plasmolysis in epidermal peels (e.g. Rhoeo/lily leaves or flashy scale leaves of onion bulb.) 

5. Study of distribution of stomata on the upper and lower surface of leaves. 

6. Comparative study of the rates of transpiration in the upper and lower surfaces of leaves. 

7. Test for the presence of sugar, starch, proteins and fats in suitable plant and animal materials. 8. Separation of plant pigments through paper chromatography. 

9. Study of the rate of respiration in flower buds/leaf tissue and germinating seeds. 

10.Test for presence of urea in urine. 

11.Test for presence of sugar in urine. 

12.Test for presence of albumin in urine. 

13.Test for presence of bile salts in urine. 

B. Study and Observe the following (spotting): 

1. Parts of a compound microscope. 

2. Specimen/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. 

3. Virtual specimens/slides/models and identifying features of –Amoeba, Hydra, liverfluke, Ascaris, leech, earthworm, prawn, silkworm, honey bee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.

4. Mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides. 

5. Different types of inflorescence (cymose and racemose). 

6. Human skeleton and different types of joints with the help of virtual images/models only. 

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PSEB Class 11 Biology Syllabus 2025-26: Download PDF

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