NCERT Books Class 11 Biology

Significance of Biology Class 11 NCERT PDF

Biology is a branch of science that deals with living organisms and life. Thus, it is known as life science or science of life. NCERT books for Class 11 Biology serve as the best source of fundamental concepts of Biology. Students can gather information to a great extent by reading this book.

Moreover, the 11th NCERT Biology book also helps students to explore their knowledge about their daily life as well. Both plant and animal kingdom, which is equally important for the board and NEET Exam are discussed here.

So, students can download NCERT Biology Class 11 PDF anytime to increase their grip on the subject for both Exams efficiently.

Chapter Wise Overview of Class 11 Biology NCERT PDF Book

The entire Biology syllabus of the CBSE board is divided into four units where each unit comprises several Chapters. Let’s start with unit 1, which includes four sections.

Unit 1: Diversity in the Living World

Chapter 1: The Living World

The first Chapter of NCERT books for Class 11 Biology begins with a wide range of living organisms present in this ecosystem. While explaining the definition of living things, this Chapter also represents the ecological clash and cooperation among these members. Students can learn about various physiological systems that help living beings sustain and carry forward their species. 

This Chapter further encapsulates the prevailing diversity that is prominently visible in every part of the world, irrespective of weather and environment. Also, the taxonomic categories and taxonomical aids of these living organisms are explicitly described here.

1. Respiration:

Respiration occurs all the time in living organisms. In this process, organisms take in oxygen (O2) from the atmosphere and give out carbon dioxide (CO2). 

Oxidation of fats and proteins takes place and energy is released. It is from this free energy that all the biological activities of living beings are conducted. Respiration is a catabolic reaction.

2. Reproduction :

Reproduction is also a characteristic of organisms. The meaning of reproduction in multicellular organisms is to produce offspring, whose characteristics are almost identical to those of their parents. Organisms also reproduce asexually. Fungi multiply by millions of asexual spores and are easily propagated. Reproduction occurs by budding in low-order organisms such as yeasts and hydra. Actual reproduction in planaria (flatworms). True regeneration takes place i.e. a fragmented organism regains (lives) the lost part of its body and thus becomes a new organism. Fungi, fibrous algae, protonema of moss all fission ( fragmentation) method.

Chapter 2: Biological Classification

Since the beginning of civilization, humans tried to categorize the entire known living population for the sake of their uses like shelter, clothing, and food. Aristotle first attempted to Classify them scientifically. He divided the plant kingdom into three Classes – herbs, shrubs, and trees. Moreover, he also Classified the animal kingdom into two sections – animals with red blood and the other which did not have.

This second Chapter of the 11th NCERT Biology PDF deals with this scientific Classification process and also explains five different Classes like Monera, Protista, Fungi, Plantae, and Animalia, and also about Viroid, Viruses, and Lichens. 

Protozoan Animal

These kingdoms are the simplest eukaryotic, microscopic, heterotrophic animals that come under Protista. They are unicellular. All biological activities take place in the cell. They are hosts. Some protozoa are parasitic. 

(a) Amoebic Protozoa :

They are clean aquatic or marine. Some are also found in moist soil. Marine types of amoeboid protozoa have a silica shell on their surface. They move and feed with the help of pseudopodia. Some amoebic protozoa such as entamoeba are parasitic. Causes of Entamoeba histolytica in humans

Amoebic dysentery is a disease.

(b) Flagellate Protozoa :

The members of this group are either independent or parasitic. The protective covering on their body is a pellicle. Flagella is helpful in circulation and nutrition. Trypanosoma parasites cause sleeping sickness, Leishmania causes Kala-azar disease.

(c) Ciliate Protozoa :

The members of this group are aquatic and have a lot of ciliates. The body is surrounded by a rigid pellicle. They have permanent cytostomes and cytopyge. Due to the rhythmic movement in the ciliary, the food reaches the cytoplasm.

Example:

Paramecium

(d) Sporozoa Protozoans :

They are intra-parasitic. They lack circulation. pellicle on cell

There is a cover. Infectious spores are formed during their life cycle.

Malaria disease caused by the malaria parasite-Plasmodium a few decades ago affected the human population.

Virus:

These were first discovered by Ivanovsky (Iwanovsky, 1892). These are also filtered through proof filters. M.W. Beijerinck (M.W. Beijerinck, 1898) found that rubbing the sap of infected (diseased) plants on the leaves of healthy plants can also cause disease to healthy plants.

On this basis, they were called liquid poisons or infectious living liquids. W.M. Stanley (W.M. Stanley, 1935) isolated the virus in its crystalline state. Dallington (Darlington, 1944) discovered that viruses are made up of nucleoproteins. Viruses are considered as the connecting link between living and nonliving.

Live Virus Symptoms

1. They get activated when they come in contact with living cells. The nucleic acid of the virus reaches the host cell and controls the metabolic activities of the cell and starts self-multiplication and also synthesizes the necessary proteins for itself. This increases the number of viruses, that is, reproduction.

2. Propagation in viruses occurs only in living cells. 

3. Genetic variations arise due to mutation in them.

4. Viruses respond to heat, chemical substances, radiation, and other stimuli.

Chapter 3: Plant Kingdom

From the previous topic, students have learned about the five Classifications of the plant kingdom. In this Chapter of Class 11 Biology book PDF, they can gather knowledge about Kingdom Plantae or plant kingdom and its further Classifications. 

The entire plant kingdom is Classified into five sections – Algae, Bryophytes, Pteridophytes, Gymnosperms, and Angiosperms. This Chapter explains the typical characteristics of each of these plant Classes and helps to understand the process of Classification. Furthermore, students can also learn about different life cycles of plants and also their alteration of generation. Thus, students can achieve a firm base about the plant kingdom, its taxonomy.

Economic Importance Of Algae

1. Algae as Food: Algae accounts for 50% of the photosynthesis on Earth. Algae are rich in carbohydrates, minerals, and vitamins. Porphyra, Alaria, Alva, Sargassum (Sargassum), Laminaria, etc. in the form of food item

Proteins are abundant in Chlorella. Vitamins are found. It is being recognized as the food of the future.

With this, there is every possibility of solving the food problem of our growing population.

2. Algae in Industry:

1. Fossils/dead bodies of diatoms form diatomaceous earth or Kiselghur. This soil tolerates 1500°C temperature. It is used in a variety of industries; For Example, metal coating, varnish, polish, toothpaste, insulating surface, etc.

2. Carrageenin is obtained from algae-like Chondrus, Eucheuma, etc. It is used in making cosmetics, shampoo, etc.

3. Algin is obtained from Alaria, Laminaria, etc. It is used in the manufacture of non-flammable films, synthetic fibers, etc. It is also used to stop blood flow during surgery.

4. Iodine, bromine, etc. are obtained from many seaweeds.

5. The antibiotic chlorellin is obtained from chlorella. It destroys the bacteria. Mosquitoes of the reservoir are destroyed by the presence of Chara and Nitella algae; Therefore, they are helpful in eradicating malaria.

6. Agar-agar is obtained from red algae, it is used for artificial culture.
   
   

Economic Importance Of Gymnosperms

1. Ornamental Plants: Plants like Soicus, Pinus, Arqucurid, Ginkgo, Thuja (Thujq), Cryptomeria etc. are used for decoration.

2. Plants of Food Value: Sago is obtained from Cycas, Jamia. The seeds of Chilgoza (Pinus gerardiana) are eaten. The seeds of Gnetum, Ginkgo, and Cycas are used as food.

3. Wood for Furniture: Wood obtained from pine (Pinus), cedar (Cedrus), cal (Pinus wallichiana), fur (Abies) is used as furniture and timber.

Chapter 4: Animal Kingdom

The fourth Chapter of NCERT Class 11 Biology book PDF deals with the Kingdom Animalia and a systemic Classification process where all known members can be assigned to a Class scientifically. The first half of this Chapter explains what the basis of this Classification system is.  The taxonomical factors include organization levels, symmetry, triploblastic and diploblastic organizations, coelom, segmentation, and notochord.

Furthermore, the second part of this topic is about the Classification of this kingdom on the basis of common fundamental physical features. These Classifications are Phylum – Porifera, Coelenterata, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordata, and Chordata.

(A) Aestivation: The mutually relative arrangement of sepals or petals in the bud stage is called floret configuration. It is corrosive, twisted, cortical, or vexillary type.

(b) Placementation: The arrangement of ovules on the placenta in the ovary is called the ovary. Seedlings are of the marginal, columnar, periphery, free columnar, base ascendant or surface type.

(c) Actinomorphy: When a flower can be divided into two halves by cutting it from any central perpendicular axis, then it is called actinomorphic.

(d) Zygomorphy: When the flower can be divided into two halves only by one central perpendicular axis, then it is called monodia symmetry.

(e) Superior Ovary: When the other parts of the flower emerge from the bottom of the ovary, then the flower is called an ovary and the ovary is called superior.

(f) Perigynous flowers: If the floral part emerges from the same height as the ovary from the inflorescence, then such flowers are called perigynous. In this, the ovary is half superior.

(g) Epipetalous Stamens: When the stamens are attached to the stamens, they are called epipetalous.  

1. Rhizome: These stems growing in the ground parallel to the horizontal plane of the ground store food. In these, festivals and festivals can be seen. Their length increases through anterior buds and branches through orbital buds. some buds. manufactures pneumatic shoots when required; For Example, ginger, banana, kelly, fern, turmeric, etc.  

2. Corm: Their symptoms are like rhizomes, but they are vertically growing underground stems. In this type of stem, there are also festivals and festivals. This food is stored. There are buds. Orbital buds from anthers. Example- Arvi, Banda, Jimikand, etc.  

3. Stem Tuber: These are formed due to flowering at the ends of underground branches. Their shape is irregular. There are festivals or festivals on the tuber, which are not clear due to the accumulation of food in large quantities. Potatoes have many eyes on the surface, which have buds and scales to cover them. Buds grow to form new aerial shoots.   

4. Bulbs : The stem is short (briefly conical or flattened) in this type of metamorphosis. The adventitious roots emerge from its basal part. Food gets stored in many scale sheets present on this stem. Under favorable conditions, aerial shoots are formed from the bud present at the anterior end of the stem. Orbital buds are also formed in the cell of scale sheets. Example- Onion, garlic, lily etc. Scale tubers.

Unit 2: Structural Organisation in Plants and Animals

From here, the second unit of the syllabus starts. This unit includes three consecutive Chapters from five to seven.

Chapter 5: Morphology of Flowering Plants

Morphology suggests the study of the external structure of various organisms. This fifth Chapter of NCERT Biology Class 11 new edition PDF presents the structure of higher plants’ external parts, their importance, and working process as well. Previously, students have learned the Classification of plants based on their morphological and other distinct characteristics.

Here, all these morphological characteristics are described in a well-presented manner. In this Chapter, students can study the root, stem, leaf, inflorescence, flower, fruit, and seed. Moreover, it also contains a description of common flowering plants and explains the typical characteristics of some vital plant families.

Chapter 6: Anatomy of Flowering Plant

Structural variations and similarities can be spotted easily by observing the living organism. However, anatomy is the study of internal structures and their functions. This sixth Chapter of Biology 11th NCERT PDF Biology 11th NCERT PDF book provides a detailed description of the functional organization and internal structure of higher plants. 

In other words, this Chapter teaches about the different types of tissues found in plant bodies and tissue systems based on the location. The anatomy of monocotyledonous and dicotyledonous plants is also elaborately described in this Chapter. Moreover, students can get to know about two different growth of plants- primary and secondary growth.

Chapter 7: Structural Organisation in Animal

In this seventh Chapter of Class 11 Biology NCERT book PDF, students can gather knowledge about multicellular and unicellular organisms of the animal kingdom. Unicellular organisms perform all of their life processes like respiration, reproduction, digestion, etc. with the help of a single cell. At the same time, multicellular organisms use various organs developed by different cells to perform different functions.

So, this Chapter is all about various animal tissues, cells, organs and their systems, functions, etc. As an Example, students can see the morphological and anatomical structure of earthworms, cockroaches, and frogs. All these three animals represent vertebrates and invertebrates. So, students can have an idea about animal structure by learning about these animals.

Unit 3: Cell: Structure and Function

Now, this CBSE Class 11 Biology book has come to another new unit. This unit has three Chapters in it, and they are all about the function and structure of the cell.

Chapter 8: The Unit of Life

This Chapter of Biology 11 NCERT PDF starts with explaining that the cell is the fundamental unit of life. All living organisms are made of cells- they could be single-celled or multiple-celled. After defining cells, this topic also concludes cell theory. This theory suggests that all living beings comprise cell and cell products, and cells are created from prevailing cells.

It provides a detailed overview of the cell and the difference between plant cells and animal cells. Moreover, it also encapsulates various types of cells with Examples like red blood cells, white blood cells, columnar epithelial cells, nerve cells, mesophyll cells, etc. Lastly, this Chapter closes with two major types of cells – prokaryotic and eukaryotic cells and their characteristics, functions, etc.

Ultrastructure :

• It is a double-layered structure. outer layer smooth and inner layer

• Finger-like inflorescences are found which are called cristae.

• The space between the two layers is called the peri mitochondrial space.

• The proteinaceous matrix is ​​found in the cavity of the mitochondria. On the surface of Christie small particles are found called F1 particles or exosomes.

• It is said that exosomes in the process of oxidative phosphatization (respiratory) participate in ATP formation. Electrons at Christie's of Mitochondria

• Transduction takes place resulting in the formation of ATP. In its matrix, D.N.A, Ribosomes, Water, Salts, wicks related to the Krebs cycle etc. are found.

• Chemical Composition: 65-70% protein, 25% lipid, D.N.A., R.N.A. See you, etc. All cytochromes related to the respiratory system chain in the inner phase; Like- Cyt b, c, a, a 3, quinone, NAD, FAD, FMN etc.

Function of Mitochondria

The Krebs cycle in the matrix of the mitochondria and the electron transport mechanism of the respiratory chain at the oxysome (F1 particle) is carried out, from which the free energy is stored in ATP. ATP provides kinetic energy for all biological activities. 

Structure of The Lava

The receptacles are surrounded by a double membrane. These are found only in eukaryotic plant cells. These are not found in fungi. It was discovered by Heikel (1865) and Schimper named it plastid. Leucoplasts are of three types; Chromoplast and Chloroplast.

1. Leucoplast :

These are cumulative lavers. They are colorless as there is no pigment. These three types are amyloplasts (boll accumulators); There is elaioplast (accumulating fat) and proteinoplast (accumulating protein).

2. Chromoplast: These are colored fungi. Commonly found in flower petals, fruits, colored leaves etc. Chloroplasts are found in brown algae, rhodoplasts in red algae and chromatophores in photosynthetic bacteria.

3. Chloroplast: The chloroplast or chloroplast was discovered by Schimper (Schimper, 1864). They contain chlorophyll (chlorophyll). These fungicides are found in the green parts of the plant, usually in the leaves (mesophyll, columnar tissue, chlorenchyma). These are of different sizes. Green algae are generally recognized by the shape of the chloroplast. In higher plants, they are round, elliptical, flat, elliptical. Generally, their length is 2-5p and width is 3-4p. Their number in the cell can be up to 20-40.

Chapter 9: Biomolecules

All living organisms in this biosphere are composed of different chemicals that are known as compounds and elements. The ninth Chapter of NCERT 11 Biology book PDF explains the process of analyzing chemical compositions in living organisms. Biomolecules help to identify these compounds by synthesizing, and these are called metabolites. This topic also provides elaborated knowledge about different metabolites.

Moving forward, students get to know about various biomolecules, proteins, polysaccharides, nucleic acids, etc. A detailed idea about protein structure, characters of bonds that link monomers in polymers, metabolism concept, etc. can also be derived from this topic. The importance of metabolism, various enzymes, and their functions are also available here.

Chapter 10: Cell Cycle and Cell Division

This is the last Chapter of this unit, where students learn about every aspect of the cell. This topic of NCERT books PDF Class 11 Biology speaks about a biological phenomenon that every living being starts with a single cell, and gradually grow to be a multicellular organism. It describes how this process works and what is a cell cycle. 

Students can also study different phases of the cell cycle like interphase, M phase, G1, S, and G2 phase, prophase, metaphase, anaphase, etc. In the other part of this Chapter, students can prepare cell divisions and their Classifications. It explains two major processes mitosis and meiosis and their significance, working process.

Unit 4: Plant Physiology

This is the start of unit four, which includes five Chapters. This unit is all about plant physiology and its various aspects.

Chapter 11: Transport in Plants

This eleventh Chapter of the 11th NCERT Biology book PDF starts with how water and other substance reach the topmost part of a tree or how they transport various elements between cells. The transport system that plants use is demonstrated here. Moreover, the relation between plants and water and their importance can be learned from Chapter eleven. Also, students can know about long-distance water transport, and other nutrients and minerals are elaborated here.

Another process called transpiration is explained here with an Example. Lastly, how trees use their phloem cell to perform their transport system from the source, can be understood easily by students.

Chapter 12: Mineral Nutrients

In this Chapter of NCERT 11th Biology book PDF, students can learn about various methods to study what all minerals plants need for their growth and living. With this study, they come to know about all the essential minerals that plants require. Moreover, this Chapter also explains the mechanism by which plants absorb these essential elements.

This topic also helps students to understand the translocation process of solutes and the metabolism system of nitrogen. Furthermore, it also explains how soil works as the reservoir of these essential elements that plants absorb and transport to their different body parts and perform their physiological activities.

Chapter 13: Photosynthesis in Higher Plants

All students who study Biology in Class 11 know that photosynthesis is a biological process that helps plants to produce their food for a living. However, this Chapter of Class 11 NCERT Biology PDF provides knowledge about it in more detail.

Students can acquire information about the early experiments on photosynthesis, the place where it take place, the number of pigments involved in this process. Furthermore, information on light reaction, electron transport, usages of ATP and NADPH, the C4 pathway are also elaborately discussed in this Chapter. In conclusion, students can also know about the factors that can affect this process.

Chapter 14: Respiration in Plants

This fourteenth Chapter of NCERT PDF Class 11 Biology encapsulates another important physical activity of plants called respiration. The process of breathing is known as respiration in Biology. This Chapter provides various Examples that prove all plants breathe to live. Also, this Chapter explains how glycolysis and fermentation are related to respiration and what is their importance.

While moving with this topic, students can get to know about aerobic respiration, the balance sheet of respiration, a quotient of this process, an amphibolic pathway. So, after finishing this Chapter, students must have a clear concept of the respiratory system of plants.

Chapter 15: Plant Growth and Development

Growth is one of the most common processes that can be found in all living beings. This Chapter of the new NCERT Biology Class 11 PDF shows how metabolism affects growth, and also it explains various aspects of growth. These aspects include measurements of growth, its phases, rate, and condition of growth. Dedifferentiation, redifferentiation, and differentiation; all these terms are also established with valid Examples and information.

Now, in the second part of this Chapter, the development of plants is discussed. Moreover, it also shows the differences between these two concepts as well. Students can gain information about all the regulators of growth, photoperiodism, and vernalization of plants.

Internal Causes of Dormancy: These Are Mainly the Following

1. Impermeability:  

In the seeds of many plants, the seed coat is hard and impermeable to water, so the seeds cannot absorb water and germinate even when in contact with water. Such seeds remain in the ground for a long time. Under natural conditions, the seed coat gradually weakens and becomes permeable as a result of the scarification of soil particles and the action of bacteria and fungi, only after that do the seeds germinate by absorbing water.

2. Impermeability of Seed Coat to Oxygen: 

Sometimes dormancy in seeds occurs due to the impermeability of the seed coat to oxygen, the factors or substances that make the seed coat impermeable to water are Gradually making it impervious to oxygen as well. Xanthium, many types of grass and similar dormancy in the seeds of some plants of the Compositae family (dormancy) is found.

3. Mechanically Resistant Seed Coat:

In the seeds of some plants, water and oxygen are absorbed by the seed coat, but the seed coat is so hard that the embryo does not develop fully, and Its development is limited to the seed coat only. The seedling stops due to failure of the seed coat, as in the seed of Alisma Plantago, the embryo swells due to water and suppresses the seed coat by imbibition pressure; But it is not able to break it and germination stops. Some other Examples of this type of dormancy are black mustard (Brassica nigra), Lepidium, Amaranthus, Retroflexus (Amaranthus retroflexus), etc.

4. Imperfectly Developed Embryo:

In this type of dormancy, the embryonic development inside the seed is not even complete that they are separated from the mother plant. Such seeds contain all the gradations of embryonic development from the fertilized egg to the fully developed embryo. In some seeds, embryonic development occurs slowly in autumn or winter and is completed in spring just before germination, such as Erythronium, Ranunculus and Ilex, etc.

5. Embryo Requirement after Ripening in Dry Storage:

In some mature seeds, the embryo is fully developed, but it becomes necessary to keep them in a dry environment for some time before germination, failing which they do not germinate. In this process, many such metabolic changes take place in the seeds which are necessary for germination. In Crataegus seeds, this after-ripening process is completed in one to three months. In this process, as the later ripening progresses, the acidity of the embryo increases. This increases water absorption and accelerates germination.

6. Presence of Germinating

Inhibitors: Some inhibitory or inhibitory substances, such as abscisic acid, coumarin, ferulic acid, and short-chain in the tissues of embryo, endosperm, seed, fruit, etc. of many plants. There are fatty acids, etc. 

Unit 5: Human Physiology

This is the last unit of NCERT books for Class 11 Biology that encapsulates human physiology. This unit consists of seven Chapters.

Chapter 16: Digestion and Absorption

Food suggests a fundamental requirement for all living beings. Living organisms require carbohydrates, fats, protein, minerals, and vitamins for their growth, development, and survival. Through the digestive system, all these elements can be absorbed by living bodies.

This Chapter gives a detailed overview of the human digestive system that comprises the alimentary canal, digestive glands, and digestion process of foods. Afterward, it highlights the process of absorption of digested foods. Moreover, this Chapter also speaks about all the common disorders like jaundice, constipation, diarrhea, etc. that are seen in humans.

Chapter 17: Breathing and Exchange of Gases

Biology students can learn about the various respiratory organs like lungs and breathing mechanisms in this Chapter of the 11th NCERT Biology book. This topic provides information about how the human body exchange gases, transport gases, and regulate this respiration process.

Lastly, it shows the disorders that are found in the human respiratory system like asthma, emphysema, occupational respiratory diseases. 

Chapter 18: Body Fluid and Circulation

The human body transports all the required elements by a fluid called blood. In this Chapter of Biology Class 11 NCERT PDF book, students can learn about the substances of blood like plasma, fluid matrix, and formed elements. It also gives information about different blood groups.

Another fluid in the form of tissue, lymph, is also described here. Moreover, students can also gather knowledge about the circulation pathway, the circulatory system of humans, and the cardiac cycle. Also, this Chapter answers various questions about double circulation, cardiac activities, and circulatory disorders like high blood pressure, angina, heart failure, etc.

Chapter 19: Excretory Products and Their Elimination

In the Biology textbook for Class XI, Chapter nineteenth explains the human excretory system. The procedure of urine formation, different functions of tubules, concentration mechanism of filtrate are also discussed in this topic.

Students can learn about kidney function and its regulations, importance of other organs in excretion. Moreover, they can also know about excretory disorders like uremia, renal failure, renal calculi, glomerulonephritis.

Chapter 20: Locomotion and Movement

Movement is a major characteristic of living organisms, and this Chapter of NCERT Biology Class 11 PDF explains various types of movements found in humans. The number of muscles like skeletal, visceral, etc. that are related to movements is also discussed here.

Students can find detailed information about the skeletal system and joints in this Chapter, explaining how this system helps humans to move and locomotion. Moreover, muscular and skeletal disorders like myasthenia, tetany, arthritis, osteoporosis, gout, etc. are also briefed in this Chapter. 

Chapter 21: Neural Control and Coordination

Human organs coordinate with each other to perform various body functions, and a neural system helps the body coordinate. In this Chapter of NCERT books for Class 11 Biology, students can acquire knowledge about the human neural system and its functional and structural units. This Chapter also encapsulates the central neural system of the human body and how this system controls most of the functions.

Students can also learn about reflex arc and action and sensory reception and transmitting process. 

Chapter 22: Chemical Coordination and Integration

This is the last Chapter of NCERT Biology Class 11 PDF, and here Biology students learn about different endocrine glands and hormones. Hormones work as intercellular transmitters that have no nutrient value. The human endocrine system shows its secretions, hormones, and their importance and functions.

This Chapter also provides information about hormones of the gastrointestinal tract, heart, and kidney. Lastly, the book closes with a mechanism behind the actions of these hormones.

Why NCERT Books Are Popular Among Both Students and Teachers?

NCERT books for Class 11 Biology have always been the first choice of students of the CBSE board and also for those who are preparing for NEET. Moreover, teachers also recommend these books for various reasons.

Straightforward Language

The primary reason why students prefer these books is their straightforward language. It makes it easier for them to understand the Chapter without putting in a lot of time and effort. The crisp writing style also helps students to cover this huge syllabus within the limited given time and to prepare for their Exams more efficiently.

Detailed Elaboration

NCERT books also come with a detailed elaboration of each topic. Therefore, students do not require to find too many reference books for the necessary information. Moreover, its elaborative manner is beneficial for students to explore their knowledge for future higher studies.  

Diagram and Images

NCERT 11 Biology PDF books provide all required diagrams and images along with the writing, which makes these books interesting to students. Contrary to monotonous write-ups, visual contents make these books more understandable and engaging so students can conclude the topic quickly.

Chapter-wise Questions

Each Chapter of NCERT books ends with several questions that benefit students to assess how much they understood from the Chapter. Also, these questions provide a general idea of the pattern of questions that may appear in their Exams. 

Why Should Students Go for Vedantu?

Vedantu is one of the fastest-growing platforms that provide the highest-quality e-learning facilities. We conduct multiple online Classes for each subject where students can clear their doubts and learn NCERT books for Class 11 Biology in a better way. Our syllabus-oriented study materials can help you to prepare for your CBSE Exam and NEET preparation together. 

Moreover, students can opt for our topic-wise online mock tests to find out their weak links and prepare accordingly.

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Other Free CBSE Class 11 Biology Study Material

Other Free Study CBSE Material for Class 11