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NCERT Solutions for Class 11 Biology have been provided in this article according to the new CBSE Class 11 syllabus. Class 11 Biology NCERT Solutions covers the concepts of CBSE Biology such as biological classification, morphology, animal and plant kingdoms, biomolecules, structural organization, cell division, nutrition, transportation in plants, photosynthesis, and more.
NCERT Solutions for Class 11 Biology
The chapters which have been omitted in the new CBSE Class 11 syllabus have been marked as omitted. The chapter-wise NCERT Solutions for Class 11 Biology are given below:
Unit-I Chapter 1: The Living World
Total weightage: 2-3 marks
Some of the important topics covered in the NCERT Solutions for Class 11 Biology – The Living World are:
- Flora and Fauna
- Species
- Taxonomic groupings
- Numerical Taxonomy
- Metabolism
- Difference between Biology and Zoology
Additional Resources:
| The Living World Important Questions | Living World MCQ | Binomial Nomenclature |
| Taxonomic Hierarchy of Plants and Animals | Genus | Herbarium |
| Cellular Organisation | Ornithology | Bird & Insect Life Cycle |
Chapter 2: Biological Classification
Total weightage: 3 marks
Some of the important topics in Biological Classification are:
- Five kingdom classification
- Scientific Names of Animals and Plants
- Virus, Viroid, Prions and Lichen
- Autotrophic Bacteria
- Virology
Additional Resources:
Chapter 3: Plant Kingdom
Total weightage: 3-4 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Plant Kingdom are:
- Gymnosperms and Angiosperms
- Scientific Name of Vitamins
- Salient features and classification of plants into major groups – Algae, Pteridophytes, Bryophytes and Gymnosperms
- Economic Importance of Gymnosperms
Additional Resources:
Chapter 4: Animal Kingdom
Total weightage: 3-4 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Animal Kingdom are:
- Salient features and classification of animals, non-chordates up to phyla level, and chordates up to class level
- Hemichordata
- Coelom
- Aschelminthes
- Platyhelminthes
Additional Resources:
| Animal Kingdom Concept Map | Animal Kingdom Important Questions | Animal Kingdom MCQ |
| Zoology | Living Fossil | Classification of Animal Kingdom |
| Vertebrates | Class – Osteichthyes | Class – Chondrichthyes |
Unit-II Chapter 5: Morphology of Flowering Plants
Total weightage: 1-2 marks
Some of the important topics in Morphology of Flowering Plants are:
- Morphology of inflorescence and flower
- Solanaceae or Liliaceae
- Plumule
Additional Resources:
Chapter 6: Anatomy of Flowering Plants
Total weightage: 2-3 marks
Some of the important topics covered in NCERT Solutions for Class 11 Biology – Anatomy of Flowering Plants are:
- Anatomy and functions of different tissues and tissue systems
- Pistil
- Xylem Parenchyma
Additional Resources:
Chapter 7: Structural Organisation in Animals
Total weightage: 2-3 marks
Some of the essential topics in Structural Organisation in Animals are:
- Anatomy, functions, and Morphology of cockroaches, frogs, earthworms
- Unicellular organisms
- Multicellular creatures
Additional Resources:
| Structural Organization in Animals Important Questions | Structural Organization of Animals - MCQ | Invertebrates |
| Vermiculture | Animal Tissue Types | Glandular Epithelium |
| Tight Junctions | Gap Junctions | Bones |
Unit-III Chapter 8: Cell the Unit of Life
Total weightage: 4-5 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Cell the Unit of Life are:
- Cell theory and cell as the basic unit of life
- Prokaryotic cells and Eukaryotic cells
- Cell envelope
- Cell organelles
- Endomembrane system
- Cytoskeleton, cilia, flagella, centrioles
Additional Resources:
| Cell Biology MCQs | Important Questions on Cell | Protein Test |
| Lipoproteins | Mitochondria | Plastids |
| Amino Acids | Plasma Membrane | Prokaryotic and Eukaryotic Cells |
Chapter 9: Biomolecules
Total weightage: Around 5 marks
Some of the important topics covered in the chapter Biomolecules are:
- Chemical constituents of living cells
- Enzymes
- Difference Between Fats and Oils
Additional Resources:
| MCQs On Biomolecules | Biomolecules Important Questions | Carbohydrates |
| Proteins | Vitamins | Nucleic Acids |
| Hormones | Sucrose | Maltose |
Chapter 10: Cell Cycle and Cell Division
Total weightage: Around 5 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Cell Cycle and Cell Division are:
- Stages of the cell cycle, meiosis, and mitosis, and their significance
- Interphase
Additional Resources:
| Cell Cycle and Cell Division Important Questions | MCQs on Cell Cycle and Cell Division | Mitosis Metaphase |
| Chromosome | Nuclear Membrane | Lysosomal Storage Disease |
Unit-IV Chapter 11: Transportation in Plants (Omitted)
Total weightage: Around 1-2 marks
Some of the important topics covered in Transportation in Plants are:
- Imbibition, osmosis, plasmolysis
- Absorption, apoplast, symplast, transpiration pull, root pressure and guttation
- Transpiration and active transportation, opening and closing of stomata
Additional Resources:
| Transportation in Plants MCQ | Transportation in Plants Important Questions | Diffusion |
| Root Pressure | Apoplast | Mass Flow Hypothesis |
| Plant Water Relations | Turgor | Bud |
Chapter 12: Mineral Nutrition (Omitted)
Total weightage: Around 1-2 marks
Some of the important topics whose question are covered in NCERT Solutions for Class 11 Biology – Mineral Nutrition are:
- Essential minerals, macro, and micronutrients
- Deficiency symptoms
- Mineral toxicity
- Nitrogen metabolism, nitrogen cycle, biological nitrogen fixation
Additional Resources:
| Mineral Nutrition MCQs | Mineral Nutrition Important Questions | Rhizobium |
| Sulphur Cycle | Nitrogen Cycle | Denitrification |
Chapter 13: Photosynthesis in Higher Plants
Total weightage: Around 1-2 marks
Some of the important topics related to Photosynthesis in Higher Plants are:
- Photosynthesis
- Cyclic photophosphorylation and non-cyclic photophosphorylation
- Chemiosmotic hypothesis
- Photorespiration
- C3 and C4 pathways
- Factors affecting photosynthesis.
Additional Resources:
| Photosynthesis in Higher Plants Important Questions | Law of Limiting Factor | What is Light Reaction? |
| Photorespiration | Kranz Anatomy | Xanthophylls |
Chapter 14: Respiration in Plants
Total weightage: Around 1-2 marks
Some of the important topics for the chapter Respiration in Plants are:
- Exchange of gases
- Cellular respiration
- Aerobic Respiration
- Amphibolic pathways
- Respiratory quotient.
Additional Resources:
| Respiration in plants MCQ | Respiration in Plants Important Questions | Glycolysis |
| Fermentation | Energy Currency of the Cell | Electron Transport Chain |
Chapter 15: Plant Growth and Development
Total weightage: Around 1-2 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Plant Growth and Development are:
Additional Resources:
| MCQs on Plant Growth And Development | Plant Growth and Development Important Questions | Stress Hormones |
| Plant roots | Movement due to growth | Growth Development |
Unit-V Chapter 16: Digestion and Absorption (Omitted)
Total weightage: Around 2 marks
Some of the important concepts in Digestion and Absorption are:
- Alimentary canal and digestive glands, digestive enzymes, and gastrointestinal hormones
- Peristalsis
- Egestion
- Nutritional, digestive disorders and the digestive system
Additional Resources:
| Digestion & Absorption Important Questions | Vestigial Organs | Large Intestine |
| Gastric | Visceral Fat | Liver Diagram |
Chapter 17: Breathing and Exchange of Gases
Total weightage: Around 1-2 marks
Some of the important topics in NCERT Solutions for Class 11 Biology – Breathing and Exchange of Gases are:
- Respiratory organs in animals
- Respiratory system in humans
- Mechanism of breathing and its regulation in humans
Additional Resources:
| Breathing and Exchange of Gases Important Questions | Breathing and Exchange of gases MCQ | Lung Diseases |
| Asthma | Human respiratory system | Human Lung |
| Diaphragm Anatomy | Thoracic Cavity | Trachea |
Chapter 18: Body Fluids and Circulation
Some of the important concepts covered in NCERT Solutions for Class 11 Biology – Body Fluids and Circulation are:
- Composition of the blood, blood groups, coagulation of blood
- Composition of lymph and its function
- Human circulatory system
- Double circulation
- Regulation of cardiac activity
- Disorders of circulatory system
Total weightage: Around 2 marks
Additional Resources:
| Important Questions on Body Fluid | Body Fluids and Circulation MCQs | Rh grouping |
| Heart Diagram | Heart Attack Symptoms | Cardiac Cycle |
| Electrocardiograph (ECG) | Heart Diseases | Pulmonary Hypertension |
Chapter 19: Excretory Products and their Elimination
Total weightage: Around 1-2 marks
Some of the important topics discussed in Excretory Products and their Elimination are:
- Modes of excretion
- Human excretory system
- Urine formation, osmoregulation
- Regulation of kidney function
- Role of other organs in excretion
- Disorders – uremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, a kidney transplant.
Additional Resources:
Chapter 20: Locomotion and Movement
Total weightage: Around 2 marks
Some of the important topics listed in NCERT Solutions for Class 11 Biology – Locomotion and Movement are:
- Skeletal muscle, contractile proteins, and muscle contraction
- Types of movement
Additional Resources:
| Locomotion and Movement Important Questions | Locomotion and Movement MCQ | Deltoid Muscle |
| Skeletal System | Muscles | Pelvic Bones |
| Rigor Mortis | Ball and Socket Joint | Hinge Joints |
Chapter 21: Neural Control and Coordination
Total weightage: Around 1-2 marks
Some of the important topics covered in Neural Control and Coordination are:
- Neuron and nerves
- Brain Diseases
- Peripheral nervous system and visceral nervous system
- Generation and conduction of nerve impulses
Additional Resources:
Chapter 22: Chemical Coordination and integration
Total weightage: Around 2 marks
Some of the important concepts whose questions are covered in NCERT Solutions for Class 11 Biology – Chemical Coordination and integration are:
- Endocrine glands and hormones
- Human endocrine system
- Exocrine Glands
- Role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders
- Dwarfism, acromegaly, cretinism, goiter, exophthalmic goiter, diabetes, Addison’s disease.
Additional Resources:
CBSE Class 11 Biology Syllabus and Weightage
| 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 |
Study Guide Links:
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