NCERT Class 11 Biology Notes - Download Chapter Wise PDF Notes

NCERT Class 11 Biology Notes are required by students for the boards as well as competitive examinations like NEET. The notes help give a quick and short revision of the chapters so that students learn concepts easily and quickly. Experts have created the notes for short answers, diagrams, and key questions from the NCERT Class 11 Biology Book. During exam time, when students have less time, these notes serve as an important tool for last-minute revision and to grasp complex concepts easily.

This Story also Contains

1. Subject-wise Weightage for Class 11 Biology
2. Chapter-wise Biology Notes for Class 11
3. Chapter-wise Breakdown of CBSE Class 11 Biology Notes
4. Benefits of NCERT Notes Class 11 Biology

The notes include all the important chapters, including diversity of the living world, structural organization in animals and plants, cell function and structure, plant physiology, and human physiology. They split difficult subjects like photosynthesis, respiration, biomolecules, and body systems into simple points. Biology notes for Class 11 are perfect for revision at the last minute since they effectively condense the material. The students can revise important terms such as mitosis, osmosis, enzymes, and neural control confidently without any fear using these notes.

Also read, Subject-Wise NCERT Notes

• NCERT Notes Class 11 Maths
• NCERT Notes Class 11 Physics
• NCERT Notes Class 11 Chemistry

Subject-wise Weightage for Class 11 Biology

For students who are in Class 11 and preparing for competitive exams like NEET, it is essential to have a strong foundation in the subject of Biology, as this subject has the highest weightage in this exam, and can increase or decrease the overall scores of a student. Subject-wise weightage is very important as it allows students to prioritize the important chapters, plan their preparation and revision effectively, and score better marks. When students are aware of the marks distribution, it becomes easy to focus on the most important topics first and understand the complex topics easily. This preparation technique helps create a strong foundation for the school exam as well as a future entrance exam.

Assessment Structure:

• Total Marks: 100

• Theory: 70 marks

• Practical Examination: 30 marks

Passing Criteria:

• Students need to score at least 33% overall (theory + practicals)

• Minimum 23 out of 70 in the theory paper

• Minimum 10 out of 30 in the practicals

Chapter-wise Biology Notes for Class 11

The notes include 19 chapters, with easy and well-understandable language, providing a clear explanation of all important topics. CBSE Class 11th is the base for advanced topics in the related subjects that will appear in Class 12. Thus, it becomes mandatory for Class 11 students to read and understand each of the topics most easily and effectively for the NCERT Notes for Class 12. To optimise the study methodology, having revision notes and NCERT Solutions handy saves you time during revision.

These notes explain all the important concepts, diagrams, and frequently asked questions. Students can easily download all the NCERT Notes for Class 11 Biology PDF for free and score good marks in their board examination.

Links of Chapter-wise Biology Notes For Class 11

The following are the links to download the PDF for all Chapters. These notes will help you understand the topics better and revise quickly before exams.

Chapter-wise Breakdown of CBSE Class 11 Biology Notes

Biology of Class 11 is divided into different units, and each unit has important chapters that build your understanding of life sciences. These notes easily explain each chapter to help you learn and revise better. The different chapters under the units are mentioned below:

Chapter 1: The Living World

Topics Covered:

• Characteristic features of living organisms
• Need for a classification system
• Major taxonomic categories
• Taxonomical aids

Chapter 2: Biological Classification

Topics Covered:

Five Kingdom classification system

• Archaebacteria, Eubacteria
• Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds, Protozoans
• Phycomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes
• Viruses, Viroids, Prions, Lichens

Chapter 3: Plant Kingdom

Topics Covered:

• Algae, Bryophytes, Pteridophytes, Gymnosperms, Angiosperms
• Systems of classification
• Life cycle of angiosperms

Chapter 4: Animal Kingdom

Topics Covered:

• Basis of classification of animals
• Levels of organisation, symmetry, diploblastic and triploblastic organisation
• Coelom, segmentation, notochord

Chapter 5: Morphology of Flowering Plants

Topics Covered:

• Roots, stem, leaf, inflorescence, flower, fruit, seed
• Modifications of root, stem, and leaf

Chapter 6: Anatomy of Flowering Plants

Topics Covered:

• Tissues, tissue system, anatomy of dicot and monocot plants
• Secondary growth in plants

Chapter 7: Structural Organisation in Animals

Topics Covered:

Animal tissues, organs, and organ systems

Morphology and anatomy of the earthworm, cockroach, and frog

Chapter 8: Cell: The Unit of Life

Topics Covered:

• Cell theory, prokaryotic and eukaryotic cells
• Cell membrane, cell wall, endomembrane system

Chapter 9: Biomolecules

Topics Covered:

• Structure, types, and importance of biomolecules
• Proteins, polysaccharides, nucleic acids

Chapter 10: Cell Cycle and Cell Division

Topics Covered:

• Cell cycle, mitosis, meiosis

Chapter 11: Photosynthesis in Higher Plants

Topics Covered:

• Discovery, site, mechanism of photosynthesis
• Light reaction, electron transport, Calvin cycle

Chapter 12: Respiration in Plants

Topics Covered:

• Pathway of anaerobic and aerobic respiration
• Glycolysis, fermentation, tricarboxylic acid cycle

Chapter 13: Plant Growth and Development

Topics Covered:

• Growth, differentiation, and plant growth regulators
• Photoperiodism, vernalization

Chapter 14: Breathing and Exchange of Gases

Topics Covered:

• Structure and function of the human respiratory system
• Mechanism of breathing, exchange of gases

Chapter 15: Body Fluids and Circulation

Topics Covered:

• Structure and function of the human circulatory system
• Blood, lymph, and circulatory pathways

Chapter 16: Excretory Products and Their Elimination

Topics Covered:

• Structure and function of the human excretory system
• Urine formation, regulation of kidney function

Chapter 17: Locomotion and Movement

Topics Covered:

• Structure and function of the human muscular and skeletal system
• Types of movement, joints

Chapter 18: Neural Control and Coordination

Topics Covered:

• Structure and function of the human nervous system
• Neurons, reflex action

Chapter 19: Chemical Coordination and Integration

Topics Covered:

• Structure and function of the human endocrine system
• Hormones, endocrine glands

Also, students can refer,

• NCERT Exemplar Class 11 Solutions
• NCERT Exemplar Class 11 Chemistry
• NCERT Exemplar Class 11 Maths
• NCERT Exemplar Class 11 Physics

Benefits of NCERT Notes Class 11 Biology

Students can grasp the complex topics easily, make their study well-organized, and score better marks in their upcoming exams by using these notes. These notes save time and make learning more effective. Some of the important benefits are given below:

• The notes help in quick and easy revision before exams.

• It covers all important topics from the NCERT textbook.

• These notes are designed by subject experts who are useful for both school exams and competitive exams like NEET.

• Notes also include diagrams and key points for better understanding, and mainly for self-study.

• The notes are provided in a well-understandable language, which makes the complex topics easier to understand.

Subject-Wise NCERT Solutions

• NCERT Solutions for Class 11 Mathematics
• NCERT Solutions for Class 11 Chemistry
• NCERT Solutions for Class 11 Physics