ISC Class 11 Biology Syllabus


ISC syllabus for class 11 Biology is well-prepared by the subject experts under the guidance of the Indian Certificate of Secondary Education (ICSE) which provides the adequate knowledge about each essential topic. Additionally, this syllabus provides some useful information, including the lists of reference books, distribution of marks for each topic, and other useful practical activities.

ISC Class 11 Biology Syllabus includes:

  1. Diversity of Life(i)Taxonomy and Phylogeny: Three Domains of Life, Taxonomical Hierarchies, Binomial Nomenclature.(ii) Five-kingdom classification: Salient features, characteristics and examples.(iii)Morphology and anatomy of different systems of cockroach (digestive, respiratory, circulatory, excretory, nervous and reproductive).
  2. Plant Physiology(i) Mineral nutrition: Macronutrients and micronutrients (role and deficiency symptoms); criteria for essentiality of elements, hydroponics; nitrogen nutrition in plants.(ii)Plant growth: Phases of growth, growth rate, measurement of growth, factors affecting growth, role of growth regulators, seed dormancy and germination, apical dominance, senescence and abscission.(iii)Photo morphogenesis in plants.
  3. Multicellularity: Structure and Functions of Plants and Animals(i)Plant Tissues: Types of plant tissues, classification, structure and function of tissues.(ii)Animal Tissues: epithelial; connective; muscular; nervous (location, structure and function).(iii)Nutrition (human): Calorific value of carbohydrates, proteins and fats, Organs of digestive system, digestive process and disorders of the digestive system.

    (iv)Respiration in humans: Organs of respiratory system, breathing mechanism, pulmonary gas exchange, transport of respiratory gases, pulmonary air volumes and lung capacities, disorders of the respiratory system.

    (v)Circulation: Open and closed vascular systems, structure of human heart, cardiac cycle, systemic and pulmonary circulation, portal system, arterial blood pressure, origin and conduction of heart beat, blood vessels, and lymphatic system. ABO groups, coagulation of blood, disorders of the Circulatory system.

    (vi)Excretion: Structure of human kidney, structure of nephron, role of skin and lungs in excretion, physiology of urine formation, counter current system; functions of the kidney; homeostasis, disorders of the excretory system.

    (vii)Endocrine System in humans: Hormones of pituitary, pineal, thyroid, parathyroid, pancreas, adrenal glands and gonads; mechanism of hormone action; effect of hypo secretion and hyper secretion, feedback mechanism.

    (viii)Nervous System in humans: Central, autonomic and peripheral, structure of brain and spinal cord, reflex action, transmission of nerve impulse, saltatory conduction; sense organs (eye and ear). Receptors (mechanoreceptor, chemoreceptor, photoreceptor and thermo receptors).

    (ix)Locomotion: Joints, structure of skeletal muscle, sliding filament theory of muscle contraction, red and white muscles, summation, tetanus and rigor mortis. Disorders of muscular and skeletal system.

  4. Units of Life(i)Biomolecules: Classification and functions of carbohydrates, proteins, lipids and nucleic acids.(ii)Enzymes: General properties, classification, mechanism of enzyme action, factors affecting enzyme activity.(iii)Cell membranes: Fluid mosaic model, membrane transport, passive and active transport, exocytosis and endocytosis. Facilitated diffusion.

    (iv)Cell structure: Structure and functions of nucleus, mitochondria, plastids, endoplasmic reticulum, Golgi complex, lysosomes, ribosomes, microfilaments, microtubules, cilia, flagella and centrioles, cell wall, vacuoles and cell inclusions. Prokaryotic cell and eukaryotic cell – a comparison.

    (v)Cellular respiration: Aerobic and anaerobic, fermentation, glycolysis, Krebs’ cycle, oxidative phosphorylation and respiratory quotient. Amphibolic pathway.

    (vi)Cell reproduction: Cell cycle, mitosis and meiosis.

  5. Organisms and Environment(i)Ecosystem: Biotic and abiotic components, Productivity and decomposition, food chain, trophic levels, food webs, ecological pyramids, niche, biogeochemical cycles.(ii)Pollution: Air, water and soil pollution and their control. Greenhouse effect and ozone depletion. 

Practise This Question

What happens when the members of the same genus but different species interbreed?