CBSE Class 11 Biology Syllabus 2021-22 for Term 1 & Term 2

Class 11 Biology Syllabus 2021-22

CBSE class 11 biology syllabus 2021-22 provides an overview of the units and the chapters covered within Biology. The units are distributed which are further classified into chapters. Class 11 Biology helps the students to have a better grip for the next upcoming years. The syllabus helps them to prepare notes and study materials easily. NCERT syllabus for Class 11 Biology is followed by CBSE and many other State boards. NCERT books are set by the best authors which makes them very reliable. In addition to this, NCERT Class 11 Biology syllabus is written in an easy language which makes it very understandable. Many questions are asked in the competitive exams from the NCERT Class 11 syllabus for Biology. Therefore, students must refer to the same and complete it on time.

Biology Class 11 Syllabus 2021-22 PDF Download

Class 11th Biology Syllabus 2021-22: Mark Distribution

CBSE Class 11 biology marks distribution will help the students to prepare better for the examinations.

The marks distributed according to the units are as follows:


CBSE Class 11 Syllabus: Unit-wise Marks Distribution
Units Marks
Unit 1: Diversity of Living Organisms 15
Unit 2: Structural organisation in Plants and Animals 8
Unit 3: Cell: Structure and Function 15
Unit 4: Plant Physiology 15
Unit 5: Human physiology 17
Total 70


Out of the 100 marks, the remaining 30 marks are covered by the internal assessment which are undertaken by the practical exams. Internal Assessment: Includes practical and viva voice.


Class 11 Biology Syllabus 2021-22: Term 1 & Term 2


Unit-1: Diversity of Living Organisms

Chapter 1: The living world

The chapter revolves around a basic question What is a living? It also covers biodiversity, need for classification, the three domains of life, concepts related to species and hierarchy and binomial classification.

Chapter 2: Biological classification

The chapter covers five kingdom classification. It starts with kingdom Monera, protista and Fungi and moves to Lichens, Viruses and Viroids.

Chapter 3: Plant kingdom

The chapter deals with the features and characteristics of plants. The basic classification of the plant kingdom into major groups – Algae, Bryophyta, Pteridophyta and Gymnosperms.

Chapter 4: Animal kingdom

This chapter includes different features, classification of animals, from non-chordates and chordates upto species level.


Unit 2: Structural Organisation in Plants and Animals

Chapter 5: Morphology of Flowering Plants

The chapter provides the outer characteristics of flowers along with their inflorescence and description of either Solanaceae or Liliaceae family.

Chapter 7: Structural organisation in Animals

The chapter covers all the animal tissues.


Unit 3: Cell: Structure and Function

Chapter 8: Cell-The unit of life

The chapter covers 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.

Chapter 9: Biomolecules

The chapter takes into account the 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

The chapter covers the basic method of cell cycle, the types of division (mitosis and meiosis) and their significance.


Unit 4: Plant Physiology

Chapter 11: Transport in Plants

The plants do not possess motor functions but they depend upon the soil for obtaining the nutrients which are taken up by their roots. The two tissues, Xylem and Phloem are responsible for transporting water and minerals. Different mechanisms such as imbibition, plasmolysis, osmosis, active transportation and transpiration are used in absorbing water and minerals.

Chapter 12: Mineral nutrition

The chapter covers the different minerals necessary for plant growth and development. The minerals can be classified into essential and non-essential based on whether plant synthesizes them or not. The different diseases caused by either absence or over production of minerals are also discussed in the chapter.

Chapter 13: Photosynthesis in higher plants

The chapter covers the basic process of photosynthesis which the students have already studied but the exact mechanism and its importance is covered. The location of the process, different steps involved are included in this chapter.

Chapter 14: Respiration in Plants

The basic process of inhalation and exhalation is respiration. But the chapter covers aerobic, anaerobic respiration, glycolysis, fermentation, electron transport system, these processes in detail.

Chapter 15: Plant growth and development

The chapter deals with the factors necessary for development of plants. Different plant growth regulators, the process of differentiation, dedifferentiation, redifferentiation, vernalization, seed dormancy, these terms are described. Also, the role of hormones in plant growth are described.

Chapter 16: Digestion and Absorption

The chapter covers physiology related to digestion and absorption of the digested food. The disorders related to digestion are also described in the chapter.

Chapter 17: Breathing and exchange of gases

The chapter deals with basic process of inhalation and exhalation of gases in human body. Along with that, the utilization of inhaled gases in different metabolic reactions is also discussed. The respiratory disorders are briefly discussed.

Chapter 18: Body fluids and circulation

The chapter keeps in account the circulatory system. The circulatory system includes heart and blood vessels. The different topics such as lymph, blood groups, electrocardiographs are also discussed.

Chapter 19 Excretory products and their elimination

The students study the solid and liquid waste generation in the body. The different types of waste generated and how they are expelled out of the body. Also, the process of urine formation and kidney regulation are discussed in detail.

Chapter 20: Locomotion and movement

The chapter deals with different forms of locomotion and movement in different organisms. Different muscles and skeletal system are discussed in the chapter. The muscles include voluntary and involuntary ones along with their mode of action.

Chapter 21: Neural control and coordination

The chapter deals with the nervous systems such as central and peripheral one. The neuron is the functional unit of the nervous system which helps in generation and transmission of nerve impulse along with synapse and reflex action.

Chapter 22: Chemical control and coordination

The chapter keeps into account the role of hormones in different metabolic actions. The endocrine system is kept in the spotlight in this chapter. The secretion, function and disorders of different hormones are described in the chapter.

The theory exam will comprise of 70 marks and 30 marks will be for the internal assessment (Practical and viva voice) making up a total of 100 marks.

Evaluation Scheme Marks
One Major Experiment (1,3,7,8) 5
One Minor Experiment (6,9,10,11,12,13) 4
Slide Preparation Part A (2,4,5) 5
Spotting Part B 7
Practical record + Viva Voice 4
Practical record + Viva Voice 5


CBSE Class 11 Biology Syllabus: PRACTICALS

A: List of Experiments

  1. Study and describe a locally available common flowering plant, from any one family: Solanaceae or 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).
  2. Study of distribution of stomata in the upper and lower surfaces of leaves.
  3. Separation of plant pigments through paper chromatography.
  4. Study of the rate of respiration in flower buds/leaf tissue and germinating seeds.
  5. Test for presence of sugar in urine.
  6. Test for presence of albumin in urine.
  7. Study/Observer of the following (spotting)
  8. Parts of a compound microscope.
  9. 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.

  1. Virtual specimens/slides/models and identifying features of – Amoeba, Hydra, liverfluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog,

lizard, pigeon and rabbit.

  1. Tissues and diversity in shape and size of animal cells (squamous epithelium, smooth,

skeletal and cardiac muscle fibers and mammalian blood smear) through

temporary/permanent slides.

  1. Mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides.

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CBSE New Syllabus Class 9 & 10 For 2021-2022


Class 11 Biology Syllabus 2021-22 for Term 1 & Term 2: FAQs

What topics are covered under different unit of Diversity of Living organisms?

The topics covered are Living world, biological classification, Plant kingdom and Animal kingdom.


How to prepare CBSE Class 11 syllabus?

Finish off the syllabus as soon as possible as the syllabus is very vast and extensive. After the chapter is finished, try to solve the questions from in between the chapters as well. Solve the sample papers as much as you can.


What is the difference between CBSE and NCERT syllabus for class 11?

NCERT Class 11 syllabus is the foundation syllabus from which CBSE and other state boards derive their syllabus.


How many units and chapters are there in class 11 biology?

NCERT Biology textbook for class 11 consists of total 5 units and 22 chapters.


What things are covered in Practical portion of the CBSE syllabus for class 11 biology?

Students need to prepare files for major and minor experiments. Also, they need to prepare slides and perform spotting for part B. One needs to pay extra attention to spotting as it carries the most marks. They will also need to maintain practical and project records of their work. A viva-voice decides their final marks. Experiments of choice in the Class 11 CBSE Biology syllabus depend on the school.


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