Class 11 Biology is a foundational subject that introduces students to core biological concepts essential for Class 12 board exams and NEET preparation. The syllabus is extensive and concept-heavy, requiring clarity in definitions, processes, diagrams, and terminology.
NCERT Solutions for Class 11 Biology provide accurate, textbook-aligned, and exam-oriented answers to all questions. These solutions help students understand concepts clearly, revise effectively, and build a strong base for higher-level Biology.
Below is the complete and latest list of NCERT Class 11 Biology chapters, for which detailed solutions are provided.
Given below are the chapter-wise NCERT Solutions for Class 11 Biology. Students can use these solutions as a complete guide for school exams and competitive exam preparation.
This chapter introduces Biology as a scientific discipline and explains the characteristics of living organisms. It also discusses taxonomy, nomenclature, and the importance of classification. NCERT solutions help students understand basic biological terminology and definitions clearly.
This chapter explains the classification of living organisms into different kingdoms based on their characteristics. It also introduces viruses, viroids, and lichens. NCERT solutions provide structured explanations of classification criteria and examples.
This chapter deals with the classification of plants from algae to angiosperms. It focuses on plant life cycles and alternation of generations. NCERT solutions help students remember key features and differences among plant groups.
This chapter explains the classification of animals based on body symmetry, coelom, and segmentation. It introduces major animal phyla. NCERT solutions simplify classification tables and comparative features.
This chapter focuses on the external structure of flowering plants, including roots, stems, leaves, flowers, fruits, and seeds. NCERT solutions assist students in understanding definitions, terms, and diagram-based questions.
This chapter explains the internal structure of roots, stems, and leaves along with different plant tissues. NCERT solutions help students understand tissue organization with clear explanations.
This chapter deals with animal tissues and organ systems using examples such as earthworm, cockroach, and frog. NCERT solutions simplify structure–function relationships and system-based questions.
This chapter introduces the cell as the basic unit of life and explains cell theory, cell types, and organelles. NCERT solutions provide clarity on cell structure and labeled diagrams.
This chapter discusses carbohydrates, proteins, lipids, nucleic acids, and enzymes along with their functions. NCERT solutions simplify complex biochemical concepts and terminology.
This chapter explains the stages of the cell cycle, mitosis, and meiosis along with their significance. NCERT solutions help students understand phase-wise events and diagram-based explanations.
This chapter explains the process of photosynthesis, light reactions, and carbon fixation pathways. NCERT solutions simplify biochemical reactions and flow of energy.
This chapter explains cellular respiration, including glycolysis, Krebs cycle, and electron transport system. NCERT solutions help students understand stepwise energy release processes.
This chapter focuses on plant hormones, growth regulators, and developmental processes. NCERT solutions help students understand hormone functions and growth stages clearly.
This chapter explains the mechanism of breathing and gas exchange in humans. NCERT solutions provide clarity on respiratory processes and related diagrams.
This chapter discusses blood, heart structure, circulation pathways, and cardiac cycle. NCERT solutions help students understand circulatory processes step by step.
This chapter explains the human excretory system and urine formation process. NCERT solutions simplify nephron structure and excretion mechanisms.
This chapter deals with different types of movements and the structure of muscles and bones. NCERT solutions help students understand muscle contraction and skeletal movements.
This chapter explains the nervous system, neurons, and coordination of body activities. NCERT solutions clarify nerve impulse transmission and reflex actions.
This chapter focuses on the endocrine system and hormonal regulation in humans.
NCERT solutions help students understand hormone functions and feedback mechanisms.
For Class 11 Biology (CBSE 2025-26), the theory paper is conducted for 70 marks, with the remaining 30 marks coming from practical assessments.
The syllabus is divided into five units. Human Physiology and Cell: Structure and Function are traditionally the most scoring and critical for higher-level competitive exams.
Class 11 Biology covers a major portion of the NEET syllabus, especially in areas like cell biology, plant physiology, and human physiology. NCERT-based preparation is essential at this stage.
Why Class 11 NCERT Biology Solutions Matter
(Session 2026 - 27)