NCERT Solutions for Class 11 Biology

NCERT Solutions for Class 11 Biology is written by expert faculty members of Physics Wallah having decade of teaching experience. There are 22 chapters in NCERT text book of class 11 Biology. Each chapter having one or two exercise having questions from 15 to 35. Our team solved all questions with required information and diagram as per the requirement of CBSE.

Right strategy for the preparation of school exam with NEET starts from class 11. With proper mix of NCERT text book and reference book. For a student career class 11 is very important and must have clear strategies to excel.

Do you know about 85 percent questions asked in NEET 2019 are directly from NCERT text book. Out of this about 45 percent form NCERT class 11 text book and rest 65 form NCERT text book of class 12. This data explains the important of NCERT class 11 Biology text book importance. With Physics Wallah NCERT Solutions for class 12 Biology you will be ready will for all challenge.

NCERT Solutions for Class 11 Biology Chapters (Updated 2023-24)

NCERT Solutions for Class 11 Biology Free PDF Download

Chapter- 1 The Living World

This chapter elaborates on basic concepts such as “What is living? Diversity in the living world, taxonomic categories, taxonomic aids, and more. The living world is rich in diversity. Millions of plant and animal species have been identified and described, but countless more remain to be discovered. Taxonomic studies of different species of plants and animals are useful in agriculture, forestry, industry, and general to know our resources and their diversity. Taxonomists have developed a taxonomic aids to facilitate the identification, naming, and classification of organisms.

Chapter- 2 Biological Classification

In this chapter, you will discuss about the characteristics of the Kingdoms Monera, Protista, and Fungi classification system of Whittaker. Kingdoms Plantae and Animalia, commonly referred to as the plant and animal kingdoms, respectively, will be covered separately in Chapters 3 and 4. You will also learn about Kingdom Monera, Protista, Kingdom Fungi, Kingdom Plantae, Kingdom Animalia, Viruses, Viroids, and Lichens in biological classification.

Chapter- 3 Plant Kingdom

In chapter 2, we learned about the broad classification of living organisms according to the system proposed by Whittaker (1969), where he proposed a classification of five kingdoms, viz. Monera, Protista, Fungi, Animalia and Plantae. This chapter will discuss about another classification within the Kingdom Plantae or 'plant kingdom.' You will also learn about algae, bryophytes, angiosperms, gymnosperms, plant life cycles, and the alternation of generations.

Chapter- 4 Animal Kingdom

We observe different animals with different formas and structures when we look around us. Over a million species of animals have been described so far, making the need for classification all the more important. The classification also helps in assigning a systematic position to newly described species. It also discusses other topics such as the Basics of classification, Classification of animals, and others. In this chapter, students will be briefly introduced to the animal kingdom.  The classification of animals and  Salient features, non-chordates up to phyla level, and chordates up to class level (salient features and a few examples of each category). (No live animals or specimens should be displayed.)

Chapter- 5 Morphology of Flowering Plants

In the chapters 2 and 3, we discuss the classification of plants based on morphological and other characteristics. For any successful attempt to classify and understand any higher plant (or any living organism), we need to know standard technical terms and definitions. We also need to know about possible variations in different parts, found as adaptations of plants to their environment, e.g., adaptation to different habitats for protection, climbing, and storage. Morphology of Flowering Plants further explains topics such as root, stem, leaf, inflorescence, flower, fruit, seed, description of some important families, semi-technical description of a typical flowering plant, and more.

Chapter- 6 Anatomy of Flowering Plants

This chapter presents the internal structure and functional organization of higher plants. The study of the internal structure of plants is called anatomy. Plants have cells as their basic unit, cells are organized into tissues, and tissues are organized into different parts of the plant. In angiosperms, monocots and dicots are anatomically different. Internal structures also show adaptations to different environments. This chapter covers Tissues, Tissue systems, the Anatomy of Dicotyledons and Monocotyledons, Secondary Growth, and more.

Chapter- 7 Structural Organisation in Animals

In the previous chapters, we discuss a large number of organisms, unicellular and multicellular, in the animal kingdom. In unicellular organisms, all functions, such as digestion, respiration, and reproduction, are performed by a single cell. In the multicellular animals, different groups of cells perform the same basic functions in a well-organized manner. All complex animals are made up of only four basic types of tissue. These tissues are organized in specific locations to form organs – such as the stomach, lungs, heart, and kidneys. Students can understand the structural organization of animals and score well in the exam by referring to the solutions available at Physics Wallah. This chapter covers the Morphology, Anatomy, and functions of different systems (digestive, circulatory, respiratory, nervous, and reproductive) of the frog.

Chapter- 8 Cell The Unit of Life

When you look around you, you see living things and non-living things. You must have asked yourself – "What feeds the organism? or, "What does an inanimate object not have that a living thing has?" The answer to this is the presence of the basic unit of life – the cell in all living organisms. All organisms are made up of cells. Some consist of a single cell and are called unicellular organisms. In contrast, others, like us, are made up of many cells called multicellular organisms. This chapter covers- Cell theory and cell as the basic unit of life, the structure of prokaryotic and eukaryotic cells; Plant cell and animal cell; cell envelope; cell membrane, cell wall; cell organelles – structure and function; endomembrane system, endoplasmic reticulum, Golgi bodies, lysosomes, vacuoles, mitochondria, ribosomes, plastids, microbodies; cytoskeleton, cilia, flagella, centrioles (ultrastructure and function); nucleus.

Chapter- 9 Biomolecules

There is a wide variety of living organisms in our biosphere. A few other topics covered in this chapter are How to Analyze Chemical Composition? Primary and Secondary Metabolites, Biomacromolecules, Proteins, Polysaccharides, Nucleic Acids, Structure of Proteins, Nature of Bond Linking Monomers in a Polymer, Dynamic State of Body Constituents – Concept of Metabolism, Metabolic Basis for Living, The Living State, Enzymes. Students will be able to get a good hold on these topics by referring to the NCERT Solutions for Class 11 Biology Chapter-9 Biomolecules from Physics Wallah.

Chapter- 10 Cell Cycle and Cell Division

Growth and reproduction are properties of cells, in fact, of all living organisms. All the cells reproduce by dividing into two, with each parent cell giving rise to two daughter cells each time it divides. These newly formed daughter cells can grow and divide independently, forming a new cell population that is create by the growth and division of a single parent cell and its progeny. In contrast, such cycles of division and growth allow a single cell to create a structure consisting of millions of cells. This chapter covers topics such as the Cell cycle, the M phase, the significance of mitosis, Meiosis, and the significance of Meiosis.

Chapter- 11 Transport in Plants

Topics in the Transport in Plants chapter include Means of Transport, Plant-Water Relationships, Transpiration, Uptake and Transport of Mineral Nutrients, Long Distance Transport of Water, Phloem, Transport: Flow from Source to Sink. Plants obtain various inorganic elements (ions) and salts from their surroundings, especially water and soil. In higher plants, there is a vascular system composed of xylem and phloem responsible for translocation. The phloem is responsible for transporting food (primarily) sucrose from the source to the sink. The pressure-flow hypothesis explains translocation in the phloem.

Chapter- 12 Mineral Nutrition

This chapter mainly focuses on inorganic plant nutrition, where we will study methods for identifying elements necessary for plant growth and development and criteria for determining essentiality. We will also study the role of essential elements, their main deficiency symptoms, and the mechanism of absorption of these essential elements. The Mineral Nutrition chapter also briefly introduces the significance and mechanism of biological nitrogen fixation.

Chapter- 13 Photosynthesis in Higher Plants

All animals, including humans that depend on plants for food. Green plants create or synthesize the food they need through photosynthesis, called autotrophs. Green plants perform "photosynthesis," a physicochemical process that uses light energy to synthesize organic compounds. Photosynthesis is important for two reasons: it forms the basis of all known food chains on Earth. It is then responsible for the release of oxygen into the atmosphere by green plants.

These chapters cover- Photosynthesis as a means of autotrophic nutrition; site of photosynthesis, pigments involved in photosynthesis (elementary idea); photochemical and biosynthetic phases of photosynthesis; cyclic and non-cyclic photophosphorylation; chemiosmotic hypothesis; photorespiration; C3 and C4 pathways; factors affecting photosynthesis.

Chapter- 14 Respiration in Plants

This chapter discusses cellular respiration or the mechanism of breaking down food materials in a cell to release energy and capture that energy for ATP synthesis. This chapter also covers topics such as “Do plants breathe? Glycolysis, Fermentation, Aerobic respiration, Respiratory balance, Amphibolic pathway, Respiratory quotient. The important concepts of this Respiration by Plants chapter are explained in simple language to make learning easier for class 11 students.

Chapter- 15 Plant Growth and Development

We have already studied the organization of the flowering plant in Chapter 5. This chapter will examine some of the factors that govern and control these developmental processes. These factors are both internal (internal) and external (external) plants. Other subtopics are Growth Differentiation, Dedifferentiation and Redifferentiation, Development, Plant Growth Regulators, Photoperiodism, Vernalization, and more. At Physics Wallah, highly experienced faculty designed plant growth and development solutions to help students pass the final exam. This chapter covers- Seed germination; phases of plant growth and plant growth rate; conditions of growth; differentiation, dedifferentiation, and redifferentiation; Sequence of developmental processes in a plant cell; growth regulators – auxin, gibberellin, cytokinin, ethylene, ABA.

Chapter- 16 Digestion and Absorption

Food is the basic requirements of all living organisms. The main components of our food are proteins, carbohydrates and fats. Both vitamins and minerals are also required in small amounts. Food provides energy and organic materials for tissue growth and repair. The water we take is plays an important role in metabolic processes and prevents organism dehydration. Our bodies cannot use the biomacromolecules in food in their original form. It must be broken down and converted into simple substances in the digestive system. This process of converting complex food substances into simple absorbable forms is called digestion, and our digestive system does it by mechanical and biochemical methods. These terms are briefly explained in the Digestion and Absorption chapter to help students understand them better.

Chapter- 17 Breathing and Exchange of Gases

As you read earlier, oxygen is used by organisms to indirectly break down simple molecules like glucose, amino acids, fatty acids, etc., to obtain energy to carry out various activities. Carbon dioxide is also released during the catabolic reactions mentioned above, which is harmful. So it is clear that oxygen must be continuously supplied to the cells, and carbon dioxide produced by the cells must be released outside. This process of exchanging oxygen from the atmosphere with carbon dioxide produced by cells is called respiration. This is also known as breathing. This chapter covers- Respiratory organs in animals, the Respiratory system in humans; mechanism of breathing and its regulation in humans – exchange of gases, transport of gases and regulation of respiration, respiratory volume; disorders related to respiration – asthma, emphysema, occupational respiratory disorders.

Chapter- 18 Body Fluids and Circulation

We have learned that all living cells must be supplied with nutrients, oxygen, and other essential substances. For the healthy functioning of the tissues, it is also necessary to continuously remove waste or harmful substances. Blood is the most generally used body fluid in most higher organisms, including humans. Another body fluid, lymph, also helps transport certain substances. In this chapter, we will discuss the composition of blood, blood groups, coagulation of blood; composition of lymph and its function; human circulatory system – Structure of human heart and blood vessels; cardiac cycle, cardiac output, ECG; double circulation; regulation of cardiac activity; disorders of the circulatory system – hypertension, coronary artery disease, angina pectoris, heart failure.

Chapter- 19 Excretory Products and their Elimination

The chapter covers topics such as the human excretory system, urine formation, tubule function, the mechanism of filtrate concentration, regulation of kidney function, micturition, the role of other organs in excretion, disorders of the excretory system, and more. This chapter covers- Modes of excretion – ammonotelism, ureotelism, uricotelism; human excretory system – structure and function; urine formation, osmoregulation; regulation of kidney function – renin-angiotensin, atrial natriuretic factor, ADH and diabetes insipidus; the role of other organs in excretion; disorders – uremia, renal failure, renal calculi, nephritis; dialysis and artificial kidney, a kidney transplant.

Chapter- 20 Locomotion and Movement

Movement is one of the distinctive characteristics of living beings. Animals and plants show a wide range of movements. Such voluntary movements are called locomotion. Walking, running, climbing, flying, and swimming are all forms of locomotor movement. Locomotory structures may not differ from those affecting other types of movement. The ways animals move vary according to their habitats and the demands of the situation. Locomotion is necessary for various reasons, such as the search for food, shelter, a mate, a suitable nesting site, favorable climatic conditions, or escape from predators. Topics covered in this chapter are- Types of movement – ciliary, flagellar, muscular; skeletal muscle, contractile proteins, and muscle contraction; skeletal system and its functions; joints; disorders of muscular and skeletal systems – myasthenia gravis, tetany, muscular dystrophy, arthritis, osteoporosis, gout.

Chapter- 21 Neural Control and Coordination

Coordination is a process in which two or more organs interact and complement each other's functions. In our body, the nervous and endocrine systems coordinate and integrate all the activities of the organs so that they work in a synchronized manner. In this chapter, we will learn about the human nervous system, the mechanisms of nervous coordination, the transmission of nerve impulses, the conduction of impulses through the synapse, and the physiology of reflex action.

Chapter- 22 Chemical Coordination and integration

We have already learned that the nervous system provides rapid point-to-point coordination between organs. Neural coordination is fast but short-lived. Because nerve fibers do not innervate all body cells and cellular functions must be constantly regulated; a special kind of coordination and integration must be ensured. Hormones perform this function. Both the nervous system and endocrine systems coordinate and regulate physiological functions in the body. Students can learn chemical coordination and integration more effectively with NCERT solutions from Physics Wallah. Topics covered in this chapter are- Endocrine glands and hormones; the human endocrine system – hypothalamus, pineal, thyroid, pituitary, parathyroid, adrenal, pancreas, gonads; mechanism of hormone action (elementary idea); role of hormones as messengers and regulators, hypo – and hyperactivity and related disorders; cretinism, goiter, exophthalmic goiter, dwarfism, acromegaly, diabetes, Addison’s disease.

Importance of NCERT Solutions for Class 11 Biology

Class 11 Biology encompasses 22 comprehensive chapters students must cover within a year. These chapters introduce a wide range of scientific concepts and essential principles. Tackling this extensive syllabus becomes manageable when students have the appropriate study materials to guide them.

An effective study resource should include concise revision notes and answer the exercise questions accurately. This is where the NCERT solutions for Class 11 Biology, curated by experts, play a crucial role.

These solutions have been meticulously crafted in accordance with the latest CBSE guidelines, ensuring comprehensive coverage of all chapter concepts. The experts have diligently aligned the answers with CBSE protocols, making these solutions a valuable tool for improving exam scores.

The NCERT solutions and the Biology Guide for Class 11 offer students a structured approach to their study sessions. The solutions provide step-by-step solutions to exercise questions, arranged chapter-wise. Students can conveniently download these files individually, facilitating easy access.

By following these solutions, students can effectively navigate through the chapters. The solutions provide accurate responses to the core questions posed in the exercises. Moreover, the simplified explanations aid in comprehending the biological principles discussed within the chapters.

Benefits of NCERT Books and Solutions

NCERT solutions and books provide a plethora of advantages to students:

• Curriculum Alignment: These resources are carefully aligned with the curriculum set by educational boards, ensuring that they cover the essential concepts required for examinations.
• Clarity: Renowned for their clear and straightforward content, they facilitate understanding intricate and complex topics, making learning more accessible.
• Strong Foundation: NCERT materials focus on establishing a robust foundation of fundamental knowledge, which serves as a cornerstone for advanced learning in subsequent grades.
• Comprehensive Coverage: These resources offer thorough coverage of subjects, guaranteeing that no critical areas are overlooked, thereby providing a well-rounded education.
• Conceptual Focus: NCERT materials prioritize conceptual understanding over rote memorization, fostering a deeper comprehension of the subjects and encouraging lifelong learning.
• Exam Readiness: Designed with exam preparation in mind, these resources include practice questions and detailed solutions, guiding students through revision and practice sessions.
• Accessible Language: Utilizing clear and accessible language suitable for various levels of learners, these materials ensure that all students can comprehend the content effectively.
• Visual Aids: Incorporating diagrams, illustrations, and visual aids, these resources enhance the comprehension of complex concepts, making learning more engaging and interactive.
• Widely Recognized: NCERT books and solutions are widely recognized and accepted by schools and educational institutions nationwide, forming an integral part of many school curricula.
• Competitive Exam Base: As a strong foundation for various competitive exams, these resources prepare students for a wide range of entrance tests and assessments.
• Critical Thinking: By helping you really understand and analyze concepts, NCERT Solutions make your brain think critically, improve your problem-solving skills, and show you how to use what you've learned in real-life situations.

Preparation Tips for Class 11 Biology

To excel in Class 11 Biology, focus on building a strong foundation, using NCERT textbooks for reliable information, maintaining a consistent study schedule, and practicing active learning techniques like summarizing and solving problems. Regular practice, diagrams, flashcards, and organized notes are crucial. Prioritize conceptual understanding, discuss with peers, and seek clarification when needed. Stay updated with the latest advancements, prepare with mock tests and past papers, maintain a balanced lifestyle, and cultivate a positive mindset. Consistency and dedication are key to success in Class 11 Biology.

Why Physics Wallah is Best for NCERT Solutions for Class 11 Biology

When considering Class 11 Biology NCERT Solutions, Physics Wallah is special for many good reasons:

To begin with, Physics Wallah approaches success with a dedicated mindset, aiming to help students achieve excellence in their exams. This commitment is evident in the careful crafting of their solutions.

The thoroughness of their NCERT solutions is particularly impressive. They provide comprehensive coverage of Class 11 Biology topics, aiding in a better understanding of concepts and overall comprehension.

The credibility of Physics Wallah is backed by the trust earned from high-achieving students. These top performers attest to the reliability and effectiveness of the resources offered by Physics Wallah.

Another notable aspect is the platform's strategic focus on important questions. This approach assists students in refining their exam readiness by concentrating on key areas.

Convenience is a prominent benefit, with solutions available in a user-friendly PDF format. This layout ensures accessibility across different devices and allows for easy sharing and referencing.

The flexibility of learning is accommodated through solutions accessible on smartphones, tablets, and laptops. This facilitates convenient learning on the go, catering to diverse learning preferences.

The sign-up procedure for Physics Wallah is simple and uncomplicated. This swift access ensures that students can quickly engage with valuable learning materials without unnecessary barriers.

Recognized as a reputable educational platform, Physics Wallah is known for its exceptional academic resources. Its standing within the education community further underscores its dependability and credibility.

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NCERT Solutions for Class 11 Biology FAQs

Q1. What are NCERT Solutions for Class 11 Biology?

Ans. NCERT Solutions for Class 11 Biology are comprehensive answers to the exercise questions in the NCERT Biology textbook. These solutions are designed to help students understand and solve complex concepts effectively.

Q2. Why are NCERT Solutions important for Class 11 Biology?

Ans. NCERT Solutions provide accurate and detailed explanations to the questions in the textbook. They help students understand concepts, practice problem-solving, and prepare effectively for exams.

Q3. How can NCERT Solutions benefit me in exam preparation?

Ans. NCERT Solutions offer step-by-step answers to exercise questions, enhancing your understanding of concepts. Regular practice using these solutions can improve your problem-solving skills and exam performance.

Q4. Are NCERT Solutions sufficient for Class 11 Biology preparation?

Ans. NCERT Solutions provide a strong foundation for understanding the subject. However, you can also refer to additional reference books and online resources for more in-depth preparation.

Q5. How do NCERT Solutions from Physics Wallah differ from other sources?

Ans. Physics Wallah NCERT Solutions are known for their comprehensive coverage, accuracy, and strategic focus on important questions. These solutions are designed to help you grasp concepts and excel in exams.