CBSE Class 11 Biology Syllabus 2021 (Revised) | Download New Syllabus PDF


CBSE Class 11 Biology Syllabus 2021: Biology is the Most Important subject for CBSE Class 11 Board Exams, as this helps in the Preparation of NEET too. Class 11 Biology syllabus NCERT 2020-21 helps to know about the Important topics and Overview of the Subject. You should have a depth concept in the Class 11 BIO Syllabus 2021-22 to score better marks in the CBSE 11th Board exam

If you Are you preparing for the Class 11 Biology Exam and in search of the latest CBSE Syllabus for Class 11 then you are in the Right Place. Here we are providing a complete guide on CBSE Class 11 Biology Syllabus 2021-22. You can easily check the new ncert biology class 11 changes pdf 2021 from the article below.

CBSE Class 11 Biology Syllabus 2021

Biology is an important subject for CBSE Science Stream. It is an essential subject for those students who want to pursue Medical, Biotechnology, Biomedical Engineering, etc. degree. Y. You should have a depth concept on Class 11 and Class 11 Biology to score better marks in the various entrance exam. With a better concept on the latest syllabus, you can secure good marks.

You already know CBSE updates about CBSE Class 11 Syllabus and Exam pattern, almost every year there will be a slight change in the paper pattern and syllabus. Here you can check CBSE new exam pattern for Class 11 Biology and Marking Scheme

Crack The Exam Easily and Chase Your Dream

Latest CBSE Class 11 Biology Syllabus

Unit I: Diversity of Living Organism

  • Chapter-1: The Living World
    • What is living? Biodiversity; Need for classification; three domains of life; taxonomy and systematics; concept of species and taxonomical hierarchy; binomial nomenclature; tools for study of taxonomy-museums, zoological parks, herbaria, botanical gardens.
  • 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
    • Salient features and classification of plants into major groups – Algae, Bryophyta, Pteridophyta, Gymnospermae and Angiospermae (three to five salient and distinguishing features and at least two examples of each category); Angiosperms – classification upto class, characteristic features and examples.
  • Chapter-4: Animal Kingdom
    • Salient features and classification of animals non chordates up to phyla level and chordates up to class level (three to five salient features and at least two examples of each category).

(No live animals or specimen should be displayed.)

Unit 2: Structural Organisation in Animals and Plants

  • Chapter-5: Morphology of Flowering Plants
    • Morphology and modifications: Tissues
  • Chapter-6: Anatomy of Flowering Plants
    • Anatomy and functions of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed (to be dealt along with the relevant practical of the Practical Syllabus).
  • Chapter-7: Structural Organisation in Animals
    • Animal tissues: Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach). (a brief account only)

Unit 3: 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, nuclear membrane, chromatin, nucleolus.
  • Chapter-9: Biomolecules
    • Chemical constituents of living cells: biomolecules, structure and function of proteins, carbodydrates, lipids, nucleic acids, enzymes, types, properties, enzyme action.
  • Chapter-10: Cell Cycle and Cell Division
    • Cell cycle, mitosis, meiosis and their significance.

Unit 4: Plant Physiology

  • Chapter-11: Transport in Plants
    • Transport in plants; Movement of water, gases and nutrients; cell to cell transport, Diffusion, facilitated 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, massflow hypothesis; diffusion of gases.
  • Chapter-12: Mineral Nutrition
    • Essential minerals, macro- and micronutrients 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.
  • Chapter-13: Photosynthesis in Higher Plants
    • Photosynthesis as a mean 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, dedifferentiation and redifferentiation; sequence of developmental processes in a plant cell; growth regulators – auxin, gibberellin, cytokinin, ethylene, ABA; seed dormancy; vernalisation; photoperiodism.

Unit 5: Human Physiology

  • Chapter-16: Digestion and Absorption
    • Alimentary canal and digestive glands, role of digestive enzymes and gastrointestinal hormones; Peristalsis, digestion, absorption and assimilation of proteins, carbohydrates and fats; calorific values of proteins, carbohydrates and fats; egestion; nutritional and digestive disorders – PEM, indigestion, constipation, vomiting, jaundice, diarrhoea.
  • Chapter-17: Breating 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 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-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; role of other organs in excretion; disorders – uraemia, renal failure, renal calculi, nephritis; dialysis and artificial kidney.
  • 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 system – myasthenia gravis, tetany, muscular dystrophy, arthritis, osteoporosis, gout.
  • Chapter-21: 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 functions of eye and ear.
  • 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); role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders; dwarfism, acromegaly, cretinism, goiter, exophthalmic goiter, diabetes, Addision’s disease.

Other Important Links Related to CBSE 11th Biology

Here you can check links to various study materials related to the 11th Biology

11th Biology Sample Papers

NCERT Biology Class 11 Textbooks PDF 2020-2021

The Biology book covers topics like Reproduction in Organisms, Human Reproduction, Sexual Reproduction in Flowering Plants, etc. The book is specially created to provide a depth concept on the subject and also helps to prepare for various entrance exams. The book is specifically focused on living Organisms, Evolution, and Biotech. While, for Human Ecology, there is a separate book.

Here you can download Chapter-wise NCERT Textbook for Class 11 Biology for Hindi and English Medium.

We have covered the detailed guide on CBSE Class 11 Biology Syllabus 2021. Feel free to ask any questions related to Class 11 Biology in the comment section below.

FAQ: CBSE Class 11 Biology Syllabus 2021

How many units are there in CBSE Class 11 Biology Syllabus 2021?

There are 5 Units in CBSE Class 11 Biology Syllabus 2021.

What is the syllabus of Biology class 11 CBSE 2021-22?

You can refer to the above article to get a detailed syllabus of Biology class 11 2020-21.

Is class 11 biology hard?

The syllabus of Class 11 Biology is completely different from that of class 10. Students opting for Biology after passing class 10 Board exam from CBSE often find it really difficult to cope with it initially.

How many chapters are there in class 11 biology?

As per the revised syllabus, there are 22 chapters in Class 11 Biology.

How many chapters are deleted from the syllabus of Class 11 Biology?

You can refer to the above article to the detailed deleted syllabus of Class 11 Biology.

2 thoughts on “CBSE Class 11 Biology Syllabus 2021 (Revised) | Download New Syllabus PDF”

  1. Sir, the syllabus of biology for class 11…. And please send me the question paper pattern for class 11 Biology… Sir please help me…

    Thank you
    Yasmin Talat


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