CBSE Biology Class 11 Syllabus 2023 – Chapters, Topics, Weightage

CBSE Biology Class 11 Syllabus 2023: Are you Looking for CBSE Class 11 Biology Syllabus 2023, Chapter, Topics ??? Then, you are on the right track. Those who are interested to know about the Information for Class XI CBSE Biology Syllabus 2023 may go through this article. As we have provided the details for CBSE Class 11 Syllabus. We all are aware that how important are the Class XI Exams in a student’s life. But students may not have to be worried about the CBSE Syllabus (सीबीएसई जीव विज्ञान कक्षा 11 का सिलेबस).

Each and every detail is provided in this article related to the Central Board of Secondary Education. You just have to check out and read every detail to know about it.

CBSE Biology Class 11 Syllabus 2023

Totally five units are there. So, here we have mentioned the total marks and the titles of those five units as well.

Unit Title Marks
I Diversity of Living Organisms 15
II Structural Organization in Plants and Animals 8
III Cell: Structure and Function 15
Iv Plant Physiology 15
V Human Physiology 17



Download CBSE Biology Class 11 Syllabus 2023

Download CBSE Biology Class 11 Syllabus 2023

And, the PDF was also given above for the scholars to download at any time they want.


Evaluation Scheme Marks
One Major Experiment Part A (Experiment No- 1,3) 5
One Minor Experiment Part A (Experiment No- 4,5,6) 4
Slide Preparation Part A (Experiment No- 2) 5
Spotting Part B 7
Practical Record + Viva Voce 4
Project Record + Viva Voce 5
Total 30

CBSE Biology Class 11 Syllabus

Unit Names and their Weightage

Units Title No. of Periods Marks
Unit – I Diversity of Living Organism 23 07 Marks
Unit – II Structural Organisation in Plants & Animals 22 11 Marks
Unit – III Cell: Structure and Function 35 15 Marks
Unit – IV Plant Physiology 40 17 Marks
Unit – V Human Physiology 40 10 + 10 = 20    Marks
Total 160 70 Marks

Practicals :

Evaluation Scheme and List of Experiments

Time : 3 hours                                                                                  Max. Marks: 30

Evaluation Scheme Marks
One Major Experiment Part A (Expt No. 1, 3, 7, 8) 05 Marks
One Minor Experiment Part A (Expt No. 6, 9, 10, 11, 12, 13) 04 Marks
Slide Preparation Part A (Expt No. 2, 4, 5) 05 Marks
Spotting Part B 07 Marks
Project Record + Viva Voice 05 Marks
Practical Record + Viva Voice 04 Marks
Total 30 Marks
  1. List of Experiments
  • Study and description of three locally available common flowering plants, one from each of the families Solanaceae, Fabacceae and Liliaceae (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). Types of the 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).
  • Test for the presence of sugar, starch, proteins, and fats. Detection in suitable plant and animal materials.
  • Separation of plant pigments through paper chromatography.
  • Study of the rate of respiration in flower buds/Leaf tissue and germinating seeds.
  • 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 leaves.
  • Test for the presence of urea in urine.
  • Test for the presence of sugar in the urine.
  • Test for the presence of albumin in the urine.
  • Test for the presence of bile salts in urine.
  1. Study/observation of the following (Spotting)
  • Study of the parts of a compound microscope.
  • Study of tissues and diversity in shapes and sizes of plant and animal cells (palisade cells, guard cells, parenchyma, collenchyma, sclerenchyma, xylem, phloem, squamous epithelium, muscle fibers, and mammalian blood smear) through temporary/permanent slides.
  • Study of mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides.
  • Study of different modifications in roots stems and leaves.
  • Study of the specimens/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.
  • Study of virtual specimens/slides/models and identification with reasons. Amoeba, Hydra, liverfluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.
  • Study and identification of different types of inflorescence (cymose and racemose).
  • Study of imbibition in seeds/raisins.
  • observation and comments on the experimental set up for showing:
  1. a) Anaerobic respiration
  2. b) Phototropism
  3. c) Effect of apical bud removal
  4. d) Suction due to transpiration
  • Study of a human skeleton and different types of joints with the help of virtual images/models only.
  • Study of the external morphology of cockroach through virtual images/models.

Prescribed Books :

  • Biology, Class-XI, Published by NCERT
  • Other related books and manuals brought out by NCERT (consider multimedia also)

Biology CBSE Syllabus For Class 11 2018 – 2019

CBSE Biology Class 11 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; the concept of species and taxonomical hierarchy; binomial nomenclature; tools for the 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 up to 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 specimens should be displayed.)

Unit – II: 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 experiment 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 – 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, nuclear membrane, chromatin, nucleolus.

Chapter – 9: Biomolecules

Chemical constituents of living cells: biomolecules, structure, and function of proteins, carbohydrates, lipids, nucleic acids, enzymes, types, properties, enzyme action.

Chapter – 10: Cell Cycle and Cell Division

Cell cycle, mitosis, meiosis, and their significance.

Unit – IV: Plant Physiology

Chapter – 16: Digestion and Absorption

Alimentary canal and digestive glands, the 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, diarrhea.

Chapter – 17: 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 – 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 the 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; the 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, Addison’s disease.

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

Download PDF  Link for CBSE Biology Class 11 Syllabus 2023        Click Here

Students need not have to worry about the Exam syllabus. As we have provided about CBSE Biology Class 11 Syllabus 2023 in this article. Once, check it and immediately start the preparation. Also, keep following us for such Updates and Do not forget to share this article with your friends. So, they may also know about CBSE Biology Class 11 Syllabus 2020-21 – Language Paper and they may also start preparing for the Exams. The curriculum for March 2021 exams is designed by CBSE, New Delhi as per NCERT textbooks for the session 2020-21.

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