CBSE Class 11 Biology Important Chapters

In CBSE Class 11 Biology, several chapters lay the foundation for understanding complex biological concepts essential for the NEET exam. Some crucial chapters include “Cell: The Unit of Life,” which explores the structural and functional aspects of cells, fundamental to understanding life processes. “Biomolecules” introduces students to the diverse molecules essential for life, such as carbohydrates, proteins, and nucleic acids. “Plant Physiology” delves into the physiological processes of plants, while “Human Physiology” provides an in-depth understanding of human body functions. These chapters not only form the basis of biology but also play a crucial role in preparing students for competitive exams like NEET, ensuring a strong conceptual understanding necessary for success in the field of biology.

Important Topics for CBSE Class 11 Biology

UNIT: Diversity in the Living World

Biology Class 11 Chapter 1: The Living World

Important Topics:

1. What is Living?
2. Diversity in the living world
3. Taxonomic categories
4. Taxonomical Aids

Biology Class 11 Chapter 2: Biological Classification

Important Topics:

1. 1. Categories and features of Monera, Protista, and Fungi

1. 1. Viruses, Prions, and Lichens

Biology Class 11 Chapter 3: Plant Kingdom

Important Topics:

1. Characteristics, Reproduction, and life cycle of all bryophytes, pteridophytes, and gymnosperms

Biology Class 11 Chapter 4: Animal Kingdom

Important Topics:

1. Basis of Classification
2. Important features and examples of all the phyla

UNIT: Structural Organization in Plants and Animals

Biology Class 11 Chapter 5: Morphology of Flowering Plants

Important Topics:

1. Modifications of root, stem, and leaf with examples
2. Types of placentation

Biology Class 11 Chapter 6: Anatomy of Flowering Plants

Important Topics:

1. Classification of simple and complex issues
2. Structure of stomata
3. Plant Anatomy and secondary growth

Biology Class 11 Chapter 7: Structural Organization in Animals

Important Topics:

1. Types of Animal Tissues
2. Types of cell junctions
3. Different types of connective tissues

UNIT: Cell: Structure and Function

Biology Class 11 Chapter 8: Cell – The Unit of Life

Important Topics:

1. Cell Theory
2. Difference between prokaryotic and eukaryotic cell
3. Cell organelles and their functions

Biology Class 11 Chapter 9: Biomolecules

Important Topics:

1. Definitions, Structure, and composition of carbohydrates, proteins, and nucleic acids
2. Factors affecting enzyme activity
3. Classification and nomenclature of enzymes

Biology Class 11 Chapter 10: Cell Cycle and Cell Division

Important Topics:

1. Phases of cell cycle
2. Details of mitosis and meiosis
3. Difference between mitosis and meiosis

UNIT: Plant Physiology

Biology Class 11 Chapter 11: Transport in Plants

Important Topics:

1. Different means of Transport
2. Difference between active and passive transport
3. Isotonic, hypotonic, and hypertonic solutions and behavior of cells placed inside them
4. Apoplast and symplast pathway
5. Ascent of sap
6. Mass flow hypothesis

Biology Class 11 Chapter 12: Mineral Nutrition

Important Topics:

1. Macro and micronutrients and their role in plants
2. Nitrogen Cycle
3. Biological nitrogen fixation

Biology Class 11 Chapter 13: Photosynthesis in Higher Plants

Important Topics:

1. Structure of Chloroplast
2. Z scheme
3. Calvin cycle
4. C4 Pathway
5. Factors affecting Photosynthesis

Biology Class 11 Chapter 14: Respiration in Plants

Important Topics:

1. Glycolysis pathway
2. TCA cycle
3. Electron transport system and oxidative phosphorylation
4. Respiratory quotient

Biology Class 11 Chapter 15: Plant Growth and Development

Important Topics:

1. Effects of Plant growth regulators (auxins, gibberins, cytokinins, ethylene, abscisic acid)
2. Long day, short day, and day-neutral plants

UNIT: Human Physiology

Biology Class 11 Chapter 16: Digestion and Absorption

Important Topics:

1. Dental Formula
2. Process of Digestion
3. Pancreatic enzymes and their action
4. Enzymes of succus entericus with action
5. Disorders of the digestive system

Biology Class 11 Chapter 17: Breathing and Exchange of Gases

Important Topics:

1. Mechanism of Breathing
2. Respiratory volumes and capacities
3. Oxygen dissociation curve
4. Transport of oxygen and carbon dioxide
5. Disorders in the respiratory system

Biology Class 11 Chapter 18: Body Fluids and Circulation

Important Topics:

1. Different types of blood cells
2. Blood Groups
3. Structure of Heart
4. Cardiac cycle
5. ECG
6. Disorders of the circulatory system

Biology Class 11 Chapter 19: Excretory Products and their Elimination

Important Topics:

1. Diagram and structure of the nephron
2. Formation of urine
3. Countercurrent mechanism
4. Regulation of Kidney function

Biology Class 11 Chapter 20: Locomotion and Movement

Important Topics:

1. Three types of Muscles
2. Mechanism of muscle contraction
3. Types of joints

Biology Class 11 Chapter 21: Neural Control and Coordination

Important Topics:

1. Structure of Neuron
2. Nerve impulse generation, conduction, and transmission
3. Reflex arc
4. Mechanism of Vision and Hearing

Biology Class 11 Chapter 22: Chemical Coordination and Integration

Important Topics:

1. Hormones and their functions (hypothalamus, pituitary, thyroid, adrenal, pancreas, testis, and ovary)
2. Diseases associated with hormones

Tips and Tricks to Crack Class 11 Biology

Below are some useful tips to help you with the easy preparation process.

• Understand the Paper’s Detailed Pattern and Syllabus : CBSE always publishes a syllabus and a pattern for each topic. All questions in the exam are from this prescribed syllabus only. Apart from the syllabus, the pattern of the paper is also crucial because it can aid in the development of exam-taking methods.
• Examine Various Question Variations: If a student wants to gain confidence and deal with any topic in the exam, it is essential to become familiar with the different types of biology questions. To begin with, students are advised to solve a more significant number of practice papers and CBSE Question Papers for Class 11 Biology. Solving these papers allows you to become acquainted with a wide range of question variations and will enable you to comprehend the question pattern and complexity.
• Remember the Key Terms and Diagrams: Biology contains a plethora of important terminology and concepts that are critical for examination purposes. Apart from complex terminology, the subject also has many significant graphics. To deliver the answers correctly in the exam, you must thoroughly practice the diagrams and recall the phrases. We advise using flashcards or noting them if you want to recall and revise efficiently.
• Correct Revision: Because biology is a theory-intensive topic, students must constantly revise to remember the concepts for a longer period. Examine all the themes and the weightage of the chapters. The weightage of biology Cass 11 chapters is presented below in order of significance.