NCERT Solutions For Class 11 Biology (2025-26)

NCERT Solutions for Class 11 Biology is a great resource for students preparing for exams. It includes important questions with clear and detailed answers. The solutions are written in a simple and easy-to-understand way, making it easier for students to follow. You can download the NCERT Solutions in PDF format, making them easy to access anytime. Our teachers have designed these solutions to help students improve their exam preparation. They are especially helpful for identifying weak areas and focusing on them to score better. By using these solutions, students can confidently answer all the questions in their NCERT textbook.

Choosing the right study material can be tricky for students. That's why, at Infinity Learn, we offer chapter-wise NCERT Solutions in both online and offline formats, making it convenient for all students. The NCERT Solutions for Class 11 is one of the best study guides for students who are dedicated to achieving their career goals.

Biology NCERT Solutions Class 11 Chapter-wise

• Chapter 1 The Living World
• Chapter 2 Biological Classification
• Chapter 3 Plant Kingdom Chapter
• Chapter 4 Animal Kingdom
• Chapter 5 Morphology of Flowering Plants
• Chapter 6 Anatomy of Flowering Plants
• Chapter 7 Structural Organisation in Animals
• Chapter 8 Cell The Unit of Life Chapter
• Chapter 9 Biomolecules
• Chapter 10 Cell Cycle and Cell Division
• Chapter 11 Photosynthesis in Higher Plants
• Chapter 12 Respiration in Plants
• Chapter 13 Plant Growth and Development
• 14 Breathing and Exchange of Gases
• Chapter 15 Body Fluids and Circulation
• Chapter 16 Excretory Products and their Elimination
• Chapter 17 Locomotion and Movement
• Chapter 18 Neural Control and Coordination
• Chapter 19 Chemical Coordination and Integration

NCERT Solutions Class 11 Biology Chapter-wise Explanation

Chapter-wise explanation for Class 11 Biology NCERT Solutions to help you understand the key concepts in each chapter:

Chapter 1: Diversity in Living World

Key Concepts: This chapter covers the concept of biodiversity and classification of living organisms. It introduces the five kingdom classification system and the role of taxonomy in identifying and naming organisms. It also discusses the importance of biodiversity and conservation.

Key Learning Points:

• Classification of organisms into Kingdoms (Monera, Protista, Fungi, Plantae, Animalia).
• Binomial nomenclature and its importance.
• Hierarchy in classification (Species, Genus, Family, Order, Class, Phylum, Kingdom).

Chapter 2: Structural Organisation in Animals and Plants

Key Concepts: This chapter explains the structural organization of both plants and animals. It includes details about the various tissues and their functions in animals and plants.

Key Learning Points:

• Animal tissues (Epithelial, Connective, Muscular, Nervous tissues).
• Plant tissues (Meristematic, Permanent tissues).
• Morphology of plants, including root, stem, leaves, and flowers.
• Comparative anatomy of plants and animals.

Chapter 3: Cell Structure and Function

Key Concepts: This chapter explains the basic unit of life – the cell. It details the structure and function of the plant and animal cells, covering organelles and their functions.

Key Learning Points:

• The cell theory.
• Structure of prokaryotic and eukaryotic cells.
• Functions of organelles like the nucleus, mitochondria, chloroplasts, and ribosomes.
• Differences between plant and animal cells.

Chapter 4: Plant Physiology

Key Concepts: This chapter discusses various physiological processes in plants such as photosynthesis, respiration, transpiration, and plant growth.

Key Learning Points:

• Photosynthesis process and the role of chlorophyll.
• The importance of transpiration and its mechanism.
• The different types of plant growth and factors affecting it.
• The role of auxins and other plant hormones.

Chapter 5: Human Physiology

Key Concepts: Focuses on the physiological functions of the human body. It covers digestion, circulation, excretion, and the nervous and endocrine systems.

Key Learning Points:

• Structure and function of the human digestive system.
• Human circulatory system: Heart, blood vessels, and blood circulation.
• The excretory system and how waste products are eliminated from the body.
• The structure and function of the human nervous system.

Chapter 6: Breathing and Exchange of Gases

Key Concepts: This chapter explains the process of breathing and how gases are exchanged in the human body. It includes the structure of the respiratory system and the mechanism of breathing.

Key Learning Points:

• Mechanism of inhalation and exhalation.
• Exchange of gases in the alveoli.
• The role of hemoglobin in oxygen transport.
• Respiratory diseases like asthma and bronchitis.

Chapter 7: Body Fluids and Circulation

Key Concepts: This chapter explains the composition and function of body fluids, including blood, lymph, and the circulatory system.

Key Learning Points:

• Composition and function of blood (Plasma, Red Blood Cells, White Blood Cells, Platelets).
• Circulatory pathway and the role of the heart.
• The process of blood clotting and the role of platelets.

Chapter 8: Excretory Products and Their Elimination

Key Concepts: This chapter covers the process of excretion in humans and other organisms, including the function of the kidneys and nephrons.

Key Learning Points:

• Structure and function of kidneys.
• The process of filtration, reabsorption, and secretion in nephrons.
• The role of the urinary system in waste elimination.

Chapter 9: Locomotion and Movement

Key Concepts: Focuses on how movement is achieved in animals through muscles and the skeletal system.

Key Learning Points:

• Structure and function of the human skeleton.
• Types of joints and their functioning.
• Mechanism of muscle contraction and movement.

Chapter 10: Neural Control and Coordination

Key Concepts: Explains the structure and function of the nervous system, including the brain, spinal cord, and neurons.

Key Learning Points:

• Structure and functioning of neurons and nerve impulses.
• The role of the brain and spinal cord in control and coordination.
• Reflex action and its pathway.

Chapter 11: Chemical Coordination and Integration

Key Concepts: Discusses the role of hormones in regulating body functions through the endocrine system.

Key Learning Points:

• Structure and function of major endocrine glands like the pituitary, thyroid, adrenal, and pancreas.
• Hormonal regulation of growth, metabolism, and reproduction.

Benefits of using NCERT Solutions for Class 11 Biology

1. Clear and Detailed Explanations: NCERT Solutions for Class 11 Biology provide clear and easy-to-understand explanations for all the concepts. These solutions break down complex topics into simpler steps, making it easier for students to grasp them.

2. Aligned with the NCERT Curriculum: The solutions are designed to match the exact NCERT syllabus and curriculum. This ensures that students are studying exactly what is required for their exams, following the prescribed textbook.

3. Comprehensive Coverage of Topics: NCERT Biology solutions cover all important topics in each chapter. Whether it's human physiology, plant biology, or genetics, the solutions ensure that no topic is left uncovered, providing students with a complete understanding.

4. Helps in Exam Preparation: These solutions are created to help students prepare effectively for exams. With all answers available in a structured format, students can use the solutions to practice different types of questions and strengthen their exam-taking skills.

5. Improves Conceptual Clarity: NCERT Solutions focus on developing conceptual clarity, which is essential for scoring well in Biology. The step-by-step solutions guide students in understanding how to approach a problem, making it easier to tackle complex questions.

6. Boosts Confidence: Regularly practicing with NCERT solutions enhances students' problem-solving skills. As students get more familiar with different types of questions and solutions, their confidence increases, helping them face exams with a positive mindset.

7. Easy Accessibility: NCERT Solutions are available online and can be downloaded in PDF format, making them easy to access anytime, anywhere. This allows students to study at their own pace, even when they're away from school.

8. Time-Saving: The solutions are concise and time-saving. Instead of spending hours searching for answers or explanations, students can easily find direct solutions to their questions, allowing them to focus more on learning and understanding.

9. Helps in Self-Study: NCERT Solutions for Class 11 Biology are especially helpful for self-study. Students can use them to solve problems on their own, identify areas of weakness, and work towards improving their understanding.

10. Boosts Performance in Competitive Exams: Many competitive exams like NEET, JEE, and AIIMS have a substantial portion of their syllabus based on NCERT textbooks. By thoroughly practicing NCERT Solutions, students can significantly boost their performance in such exams.

11. Helpful for Revision

During the exam season, NCERT Solutions are ideal for quick revisions. The solutions provide a short and precise overview of each topic, making it easier to review the concepts and key points before exams.

12. Helps in Understanding the Language of Biology

The solutions also help students get familiar with the scientific language and terminologies used in Biology. This is crucial, as understanding the language of Biology is necessary for answering questions accurately.

13. Free of Cost

NCERT Solutions for Class 11 Biology are freely available online, making them an affordable and valuable resource for all students.

14. Guided Learning

NCERT Solutions guide students through the right methodology to approach Biology questions, teaching them how to write clear, concise, and accurate answers.