CBSE Class 11 Biology Deleted Syllabus: Download PDF

Unit I: Diversity of Living Organisms

• Biodiversity
• Need for classification
• Three domains of life
• taxonomy and systematics
• Concept species and taxonomical hierarchy
• Binomial nomenclature

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

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

• Salient features and classification of animals, non-chordates up to phylum 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 Organisation in Plants and Animals

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

• Anatomy and functions of tissue systems in dicots and monocots.

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

Unit-III Cell: Structure and Function

• Cell theory and the cell as the basic unit of life, the structure of prokaryotic and eukaryotic cells
• Plant cells and animal cells
• 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

• Chemical constituents of living cells: biomolecules, structure, and function of proteins
• Carbohydrates, lipids, and nucleic acids
• Enzyme types, properties, and 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)

• Cell cycle, mitosis, meiosis, and their significance

Unit IV Plant Physiology

• 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.

• 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.

• Seed germination
• Phases of plant growth and plant growth rate
• Conditions of growth
• Differentiation, differentiation, and redifferentiation
• The sequence of developmental processes in a plant cell
• Plant growth regulators - auxin, gibberellin, cytokinin, ethylene, ABA

Unit-V Human Physiology

• 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

• Composition of blood, blood groups, coagulation of blood, composition of lymph, and its function
• Human circulatory system - Structure of the 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.

• 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 - uremia, renal failure, renal calculi,
• Nephritis, dialysis, artificial kidney, and kidney transplant

• Types of movement - ciliary, flagellar, muscular
• Skeletal muscle, contractile proteins, and muscle contraction
• Skeletal system and its functions
• Joints
• Disorders of the muscular and skeletal systems - myasthenia gravis, tetany, muscular dystrophy, arthritis, osteoporosis, gout

• Neurons and nerves
• Nervous system in humans - central nervous system
• peripheral nervous system and visceral nervous system
• Generation and conduction of nerve impulses

• 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
• Hypoactivity, hyperactivity, and related disorders
• Dwarfism, acromegaly, cretinism, goitre, exophthalmic goitre, diabetes, Addison's disease