CBSE Class 11 Biology Syllabus 2024-25

CBSE Class 11 Biology Syllabus 2024-25

Students must follow the updated CBSE syllabus to ensure they are aligned with the official curriculum. With the most recent syllabus, students can focus on important topics, manage their study time effectively, and prepare for their exams with confidence using myCBSEGuide App. The CBSE Class 11 Biology syllabus for the 2024-25 academic session covers a wide range of topics that provide students with a comprehensive understanding of the living world, cellular functions, human physiology, and plant and animal systems. Designed to align with the latest educational standards, this syllabus ensures that students gain a solid foundation in biological concepts that will be crucial for higher studies in biology and related fields.

Key Topics in the Class 11 Biology Syllabus 2024-25:

1. Diversity of Living Organisms:
   • This section explores the variety of life forms present on Earth. Students will learn about:
     • Classification of Organisms: Understanding the need for classification and the hierarchical system used in biology, such as the five-kingdom system.
     • Plant and Animal Kingdoms: Detailed study of plants and animals, their characteristics, and their classification into major groups (e.g., Angiosperms, Gymnosperms, Invertebrates, Vertebrates).
     • Microorganisms: Study of microorganisms, their role in the environment, and their importance in various industries.
2. Structural Organization in Plants and Animals:
   • This part covers the structural aspects of plants and animals at cellular, tissue, and organ levels, including:
     • Tissues in Plants and Animals: Examination of the types of tissues in both plant and animal organisms and their functions.
     • Organ Systems: Study of major organ systems such as digestive, respiratory, circulatory, and excretory systems in humans and other organisms.
     • Adaptations: Understanding how structural adaptations help organisms survive in different environments.
3. Cell: Structure and Function:
   • This topic provides an in-depth look at the fundamental unit of life — the cell. Students will cover:
     • Cell Structure: Detailed study of cell components like the nucleus, mitochondria, chloroplasts, and other organelles.
     • Cell Function: Understanding the roles of various cellular processes like cell division, protein synthesis, and energy production.
     • Cell Theory and History: Exploring the contributions of scientists to the development of cell theory and the understanding of life at the cellular level.
4. Human Physiology:
   • This section focuses on the physiological processes that take place in the human body. Topics include:
     • Digestion and Absorption: Understanding how the digestive system processes food and absorbs nutrients.
     • Breathing and Respiration: Exploring the mechanisms of gas exchange and the role of the respiratory system.
     • Body Fluids and Circulation: Study of the circulatory system, blood, and heart functioning.
     • Excretion and Regulation: Detailed analysis of the excretory system and its role in maintaining homeostasis.
     • Nervous Coordination and Control: Understanding the structure and functioning of the nervous system.

Why Understanding the Syllabus is Important:

The Class 11 Biology syllabus is critical for students interested in pursuing a career in medicine, environmental science, biotechnology, or any biological science field. By focusing on the fundamental principles of biology, students will be equipped with the knowledge to explore advanced topics in later classes. Download the syllabus from our website myCBSEguide now to start preparing and ensure success in your exams.

Additionally, a solid understanding of the basics, including cell biology, human physiology, and the diversity of life, helps students develop analytical skills, attention to detail, and a deeper appreciation for the natural world.

Preparation Tips for Class 11 Biology:

1. Focus on Core Concepts: Ensure you understand the key biological concepts like cell structure, classification systems, and human body systems. These form the foundation for further learning in biology.
2. Master Diagrams and Processes: Biology is a subject where diagrams are essential for understanding and explaining concepts. Practice drawing and labeling diagrams such as the structure of a cell, human heart, and plant cells.
3. Relate Theory to Real-World Applications: Relate theoretical concepts to real-life scenarios. Understanding how biological principles apply to health, the environment, and daily life will help solidify your knowledge.
4. Use NCERT Textbooks: The NCERT textbooks are the primary source for CBSE biology, so ensure you study them thoroughly. They provide a clear and detailed explanation of the topics in the syllabus.
5. Regular Revision: Regularly revise key topics, and practice solving sample papers to get familiar with the exam pattern and time management.
6. Conceptual Clarity: Focus on clearing your concepts before moving on to more complex topics. This will ensure you understand the foundational topics thoroughly, which is essential for tackling higher-level questions.

Class 11 Biology Mobile App

CBSE Class – 11
Biology (Code No. 044)
Syllabus (2024-25)

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COURSE STRUCTURE
(THEORY)

Time: 03 Hours
Max. Marks: 70

Unit	Title	Marks
I	Diversity of Living Organisms	15
II	Structural Organization in Plants and Animals	10
III	Cell: Structure and Function	15
IV	Plant Physiology	12
V	Human Physiology	18
	Total	70

Unit-I Diversity of Living Organisms

Chapter-1: The Living World
Biodiversity; Need for classification; three domains of life; taxonomy and systematics; concept of species and taxonomical hierarchy; binomial nomenclature.

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

Chapter-4: Animal Kingdom
Salient features and classification of animals, non-chordates up to phyla level and chordates up to class level (salient features and of a few examples of each category).
(No live animals or specimen should be displayed.)

Unit-II Structural Organization in Animals and Plants

Chapter-5: Morphology of Flowering Plants
Morphology of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed. Description of family Solanaceae

Chapter-6: Anatomy of Flowering Plants
Anatomy and functions of tissues systems in dicots and monocots.

Chapter-7: Structural Organisation in Animals
Morphology, Anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of frog.

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.

Chapter-9: Biomolecules
Chemical constituents of living cells: biomolecules, structure and function of proteins, carbohydrates, lipids, nucleic acids; Enzymes- types, properties, 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)

Chapter-10: Cell Cycle and Cell Division
Cell cycle, mitosis, meiosis and their significance

Unit-IV Plant Physiology

Chapter-13: Photosynthesis in Higher Plants
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.

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.

Unit-V Human Physiology

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 – uremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, kidney transplant.

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 systems – 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.

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 goitre, diabetes, Addison’s disease.
Note: Diseases related to all the human physiological systems to be taught in brief.

PRACTICALS

Time: 3 Hours
Max. Marks: 30

Evaluation Scheme		Marks
One Major Experiment Part A (Experiment No- 1,3,7,8)		5 Marks
One Minor Experiment Part A (Experiment No- 6,9,10,11,12,13)		4 Marks
Slide Preparation Part A (Experiment No- 2,4,5)		5 Marks
Spotting Part B		7 Marks
Practical Record + Viva Voce	Credit to the student’s work over the academic session may be given	4 Marks
Project Record + Viva Voce		5 Marks
Total		30

1. List of Experiments
   1. Study and describe locally available common flowering plants, from family Solanaceae (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), type of root (tap and adventitious); type of stem (herbaceous and woody); leaf (arrangement, shape, venation, simple and compound).
   2. Preparation and study of T.S. of dicot and monocot roots and stems (primary).
   3. Study of osmosis by potato osmometer.
   4. Study of plasmolysis in epidermal peels (e.g. Rhoeo/lily leaves or flashy scale leaves of onion bulb).
   5. Study of distribution of stomata in the upper and lower surfaces of leaves.
   6. Comparative study of the rates of transpiration in the upper and lower surface of leaves.
   7. Test for the presence of sugar, starch, proteins and fats in suitable plant and animal materials.
   8. Separation of plant pigments through paper chromatography.
   9. Study of the rate of respiration in flower buds/leaf tissue and germinating seeds.
   10. Test for presence of urea in urine.
   11. Test for presence of sugar in urine.
   12. Test for presence of albumin in urine.
   13. Test for presence of bile salts in urine.
2. Careful observation of the following (spotting):
   1. Parts of a compound microscope.
   2. 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.
   3. Virtual specimens/slides/models and identifying features of – Amoeba, Hydra, liver fluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog, lizard, pigeon and rabbit.
   4. Mitosis in onion root tip cells and animals cells (grasshopper) from permanent slides.
   5. Different types of inflorescence (cymose and racemose).
   6. Human skeleton and different types of joints with the help of virtual images/models only.

Practical Examination for Visually Impaired Students Class XI

Note: The ‘Evaluation schemes’ and ‘General Guidelines’ for visually impaired students as given for Class XII may be followed.

1. Items for Identification/Familiarity with the apparatus/equipment/animal and plant material/chemicals. for assessment in practicals (All experiments)
2. Equipment – compound microscope, test tube, petridish, chromatography paper, chromatography chamber, beaker, scalpel
   Chemical – alcohol
   Models – Model of Human skeleton to show – Ball and socket joints of girdles and limbs, Rib cage, Honeycomb, Mollusc shell, Pigeon and Star fish, cockroach
   Specimen/Fresh Material – mushroom, succulents such as Aloe vera/kalenchoe, raisins, potatoes, seeds of monocot and dicot- maize and gram or any other plant, plants of Solanaceae – Brinjal, Petunia, any other
3. List of Practicals
   1. Study three locally available common flowering plants of the families – Solanaceae and identify type of stem (Herbaceous or Woody), type of leaves (Compound or Simple).
   2. Study the parts of a compound microscope- eye piece and objective lens, mirror, stage, coarse and fine adjustment knobs.
   3. Differentiate between monocot and dicot plants on the basis of venation patterns.
   4. Study the following parts of human skeleton (Model): Ball and socket joints of thigh and shoulder
   5. Rib cage
   6. Study honeybee/butterfly, snail/sheik snail through shell, Starfish, Pigeon (through models).
   7. Identify the given specimen of a fungus – mushroom, gymnosperm-pine cone
   8. Identify and relate the experimental set up with the aim of experiment:
      For Potato Osmometer/endosmosis in raisins.

Note: The above practicals may be carried out in an experiential manner rather than recording observations.

Prescribed Books:

1. Biology Class-XI, Published by NCERT
2. Other related books and manuals brought out by NCERT (including multimedia).

CBSE Syllabus 2024-25

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How to Download the CBSE Class 11 Biology Syllabus 2024-25:

1. Visit myCBSEguide website.
2. Use the search bar to find “Class 11 Biology Syllabus.”
3. Click on the relevant syllabus link for the 2024-25 session.
4. Download the syllabus in PDF format by clicking the download button.

Alternatively, install the myCBSEguide App from Google Play or the App Store, log in, and download the syllabus directly from the app.

Frequently Asked Question:

When will the CBSE 2025 syllabus be released?

The CBSE 2025 syllabus has already been released by the board. Students can now access the updated syllabus for all subjects, including the CBSE Class 11 Biology Syllabus 2024-25. This syllabus is available in PDF format, offering a convenient way for students to download and review the topics they need to focus on in preparation for their exams.

For those aiming to excel in their studies, it’s essential to stay informed and use reliable study resources. The myCBSEguide website provides the latest syllabus for all CBSE subjects, helping students stay aligned with the curriculum. The myCBSEguide App platform also offers a range of educational materials such as sample papers, chapter-wise test papers, NCERT solutions, and revision notes, all designed to streamline exam preparation.

Additionally, educators can take advantage of the Examin8 App and Examin8 Website to create customized mock tests and practice papers tailored to their students’ needs.