CBSE Class 11 Biology syllabus 2020-21 (Revised) is available here at Textual Solution
with the beginning of the new academic session, CBSE has released the new course structure for class 11 Biology subject. In the new CBSE Class 11 Biology syllabus, you will get complete details about topics, subtopics and other important details. CBSE class 11 students having Biology as one of their subjects are advised to thoroughly study the new CBSE class 11 Biology syllabus and plan their studies accordingly. However, the syllabus was revised later and here we have provided the revised CBSE class 11 Biology syllabus 2020-21.
Theory - Total Periods : 180
I. Diversity in Living World (Periods : 25)
- What is living ?
- Biodiversity
- Need for classification
- Three domain of life
- Taxonomy and Systematics
- Concept of species and taxonomical hierarchy
- Binomial nomenclature
- Tools for study of Taxonomy - Museums
- Zoos
- Herbaria
- Botanical gardens
- Five kingdom classification
- Salient features and classification of Monera
- Protista and Fungi into major groups
- Lichens
- Viruses and Viroids
- Salient features and classification of plants into major groups - Algae
- Bryophytes
- Pteridophytes
- Gymnosperm and Angiosperm (three to five salient and distinguishing features and at least two examples of each category)
- Angiosperms - classification up to class
- Characteristics features and examples
- Salient features and classification of animals - non chordate up to phyla level and chordate up to classes level (three to five salient features and at least two examples)
- Morphology and modifications
- Tissues
- Anatomy and functions of different parts of flowering plants : Root, stem, leaf, inflorescence - cymose and racemose, flower, fruit and seed (To be dealt along with the relevant practical of the Practical Syllabus)
- Animal tissues
- Morphology
- anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach). (Brief account only)
- Cell theory and cell as the basic unit of life
- Structure of Prokaryotic and eukaryotic cell
- Plant cell and Animal cell
- Cell envelop
- Cell membrane
- Cell wall
- Cell organelles - structure and function
- Endomembrane system - endoplasmic reticulum
- Golgi bodies
- Lysosomes
- Vacuoles
- Mitochondria
- Ribosomes
- Plastids
- Microbodies
- Cytoskelton
- Cilia
- Flagella
- Centrioles (ultra structure and functions)
- Nucleus - nuclear membrane
- Chromatin
- Nucleolus
- Chemical constituents of living cells : Biomolecules - structure and function of proteins, carbohydrates, lipid, nucleic acids, Enzymes - types, properties, enzyme action
- Cell division : Cell cycle, mitosis, meiosis and their significance
Plant Physiology (Periods - 45)
- Transport in plants : Movement of water, gases and nutrients, Cell to cell transport - Diffusion, faciliatated diffusion, active transport,
- Plant - water relations - Imbibition, water potential, osmosis, Plasmolysis
- Long distance transport of water - Absorption, apoplast, symplast, transpiration pull, root pressure and guttation
- Transpiration - Opening and closing of Stomata
- Uptake and translocation of mineral nutrients - Transport of food, phloem transport, Mass flow hypothesis
- Diffusion of gases
- Mineral nutrition - Essential minerals, macro and macronutrients and their role
- Deficiency symptoms
- Mineral toxicity
- Elementary idea of Hydroponics as a method to study mineral nutrition
- Nitrogen metabolism - Nitrogen cycle, biological nitrogen fixation
- Photosynthesis - Photosynthesis as a means of Autotrophic nutrition
- Where does photosynthesis takes place
- How many pigments are 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
- Respiration - Exchnge of gases
- Cellular respiration - glycolosis, fermentation (anaerobic), TCA cycle and electron transport system (aerobic)
- Energy relations - Number of ATP molecules generated
- Amphibolic pathways
- Respiratory quotient
- Plant growth and development - Seed germination, phases of plant growth and plant growth rate
- Conditions of growth
- Differentiation
- dedifferentiation and redifferentiation
- Sequence of developmental process in a plant cell
- Growth regulators - auxin
- Gibberellin
- Cytokinin
- Ethylene
- ABA
- Seed dormancy
- Vernalisation
- Photoperiodism
V. Human Physiology (Periods 45)
- Digestion and absorption - Alimentary canal and digestive glands
- Role of digestive enzymes and gastrointestinal hormones
- Peristalisis, digestion, absorption and assimilation of proteins, carbohydrates and fats
- Calorific value of proteins, carbohydrates and fats (for box item not to be evaluated), Egestion
- Nutritional and digestive disorders - PEM, indigestion, constipation, vomiting, jaundice, diarrhea
- Breathing and Respiration - Respiratory organs in animals (recall only)
- Respiratory system in humans
- Mechanism of breathing and its regulation in human - Exchange of gases, transport of gases and regulation of respiration, Respiratory volumes
- Disorder related to respirtion - Asthma, Emphysema, Occupational respiratory disorder
- Body fluids and circulation - Composition of blood, blood groups, coagulation of blood
- Composition of lymph and its functions
- 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
- Agina pectoris
- Heart failure
- Excretory products and their elimination - Modes of excretion - Ammonotelism, ureotelism, urocotelism
- Human excretory system - structure and function
- Urine formation
- Osmoregulation
- Regulation of kidney function - Renin-angiotensin, Artrial Natriuretic Factor, ADH and Diabetes insipidus
- Roles of other organs in excretion
- Disorders-Uraemia, Renal failure, Renal Calculi, Nephritis
- Dialysis and artificial kidneys
- Locomotion and Movement - Types of movement - ciliary, flagellar, muscular, Skeltal muscle - contactile proteins and muscle contraction
- Skeltal system and its function (To be dealt with the relevant practical of Practical syllabus)
- Joints
- Disorder of muscular and skeltal system - Myasthenia gravis, Tetany, Muscular dystrophy, Arthritis, Osteoporosis, Gout
- 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
- Reflex action
- Sensory perception
- Sense organs
- Elementary structure and function of eye and ear
- Chemical coordination and regulation - 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 messangers and regulators, Hypo-and hyperactivity and related disorders (Common disorders e.g. Dwarfism, Acromegaly, Cretinism, goiter, exopthalmic goiter, diabetes, Addison's disease).
- Disease related to all the human physiology systems to taught in brief.
Practicals (Total Periods = 60)
A. List of experiments
- Study and describe three locally available common flowering plants from each of the following families (Solanaceae, Fabaceae and Liliaceae) including dissection and display of floral whorls and anther and ovary to show number of chambers. Types of root (Tap and Adventitious); 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 leaves)
- Study of distribution of stomata in the upper and lower surface of leaves.
- Comparative study of the rates of transpiration in the upper and lower surface of the leaves.
- Test for the presence of sugar, starch, proteins and fats. To detect them in suitable plant and animal materials.
- Separation of plant pigments through paper chromatography.
- To study the rate of respiration in flower buds/leaf tissue and germinating seeds.
- To test the presence of urea in urine.
- To detect the presence of sugar in urine/blood sample.
- To detect the presence of albumin in urine.
- To detect the presence of bile salts in urine.
B. Study/observation of the following (spotting)
- Study parts of a compund microscope
- Study of the specimens and identification with reasons - Bacteria, Oscillatoria, Spirogyra, Rhizopus, mushroom, yeast, liverwort, moss, fern, pine, one monocotyledonous plant and one dicotyledonous plant and one lichen.
- Study of specimens and identification with reasons - Amoeba, Hydra, Liverfluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.
- Study of tissues and diversity in shapes and sizes of plant and animal cells (e.g., palisade cells, guarrd cells, parenchyma, collenchyma, sclerenchyma, xylem, phloem, squamous epithelium, muscle fibres and mammalian blood smear) through temporary /permanent slides.
- Study of mitosis in onion root tips cells and animal cells (grashopper) from permanent slides.
- Study of different modifications in root, stem and leaves.
- Study and identification of different types of inflorescene.
- Study of imbibition in seeds/raisins.
- Observation and comments on the experimental setup for showing : (a) Anaerobic respiration (b) Phototropism (c) Apical bud removal (d) Suction due to transpiration
- Study of human skelton and different types of joints.
- Study of external morphology of cockroach through models