NCERT Solutions For Class 11 Biology: Students looking for Biology NCERT solutions have landed on the right page. Here we will provide you all the intext and chapter-end exercise questions with comprehensive answers to each question. These solutions are prepared by expert faculty at Embibe having years of subject experience. All the questions are solved with proper explanations and supported with diagrams if required so that students can understand the answers better. These solutions will surely help you to ace Class 11 exams as well as will aid you in Engineering and Medical entrance examinations as well.
Students will be able to download the solutions chapter-wise as pdf. We will also provide some important questions along with preparation tips that students can follow and improve their scores.
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NCERT Solutions For Class 11 Biology
You can download the CBSE NCERT Solutions for Class 11 Biology for free of cost. By practicing the solutions for CBSE NCERT Class 11 Biology, you will be ready to take on any difficulty level that comes in the exam. Questions that are there in the CBSE NCERT Solutions for Class 11 Biology are similar to that of competitive exams like JEE and NEET. We bring you the chapter-wise Class 11 Biology CBSE NCERT Solutions below:
Class 11 Biology NCERT Solutions for:
Advantages of CBSE NCERT Solutions For Class 11 Biology
CBSE NCERT Solutions for Class 11 Biology comes with its own advantages and benefits. The more you practice the questions provided here the more prepared you will be for the upcoming exams. It is important for the students to have good knowledge of Biology so as to score well in the exam. In order to motivate you to take up Biology seriously, we get you some advantages and pros of solving CBSE NCERT Solutions for Class 11 Biology:
- You will understand a new definition of Chemistry through the exemplar problems provided in the CBSE NCERT Solutions for Class 11 Biology.
- The Class 11 Biology NCERT Solutions plays an integral role in providing you with tips and tricks on solving different questions.
- The worksheets and questions provided in the NCERT Class 11 Solutions for Biology sync well with the understanding level of any student.
- CBSE NCERT Solutions for Class 11 Biology comprises numerical problems as well as important questions to help you practice every level of questions that might be asked in the exam.
- The solutions of CBSE NCERT Class 11 Biology are prepared by the top academic experts of Embibe.
NCERT Solutions For Class 11 Biology: Chapter Descriptions
Before you start preparing for 11th class Biology, it is essential for you to go through the class 11 Biology chapter description:
NCERT Solutions for Class 11 Chapter 1: The Living World
This chapter of NCERT Class 11 Chapter 1 The Living World teaches the students that the living world is rich in variety. Millions of plants and animals have been identified and described but a large number still remains unknown. The very range of organisms in terms of size, colour, habitat, physiological and morphological features make us seek the defining characteristics of living organisms.
The topic also teaches the learners about taxonomy and how the taxonomic studies of various species of plants and animals are useful in agriculture, forestry, industry, and in general for knowing the bio-resources and their diversity.
NCERT Solutions for Class 11 Biology Chapter 2: Biological Classification
In this NCERT Class 11 Chapter 2 Biological Classification, students will be taught that the Biological classification of plants and animals was first proposed by Aristotle on the basis of simple morphological characters. Linnaeus later classified all living organisms into two kingdoms- Plantae and Animalia.
Learners will also further get to know that Whittaker proposed an elaborate five-kingdom classification- Monera, Protista, Fungi, Plantae, and Animalia. Students will also be enlightened on various bacteria as well as fungi.
NCERT Solutions for Class 11 Biology Chapter 3: Plant Kingdom
In this chapter, candidates will know that Plant kingdom includes algae, bryophytes, pteridophytes, gymnosperms, and angiosperms. Algae are chlorophyll-bearing simple, thalloid, autotrophic, and largely aquatic organisms. Depending on the types of pigment possessed and the type of stored food, algae are classified into three classes namely- Chlorophyceae, Phaeophyceae, and Rhodophyceae.
Algae usually produce vegetatively by fragmentation, asexually by the formation of different types of spores and sexually by the formation of gametes which may show isogamy, anisogamy, or oogamy.
NCERT Solutions for Class 11 Biology Chapter 4: Animal Kingdom
This chapter on the Animal Kingdom will teach the students that the basic fundamental features such as level of organisation, symmetry, cell organisation, coelom, segmentation, notochord, etc, have enabled us to broadly classify the animal kingdom. Besides the fundamental features, there are many other distinctive characters which are specific for each phyla or class.
Learners will also know that Porifera includes multicellular animals that exhibit a cellular level of organisation and have characteristic flagellated choanocytes. The coelenterates have tentacles and bear cnidoblasts. Whereas the Platyhelminthes have a flat body and exhibit bilateral symmetry. The parasitic forms show distinct suckers and hooks.
NCERT Solutions for Class 11 Biology Chapter 5: Morphology of Flowering Plants
This NCERT Chapter 5 Morphology of Flowering Plants teaches the learners that flowering plants exhibit enormous variation in shape, size, structure, mode of nutrition, life span, habit, and habitat. They have well-developed root and shoot systems. Root systems are either taproot or fibrous. Generally, dicotyledonous plants have tap roots while monocotyledonous plants have fibrous roots.
Students will further learn that the roots in some plants get modified for the storage of food, mechanical support, and respiration. The shoot system is differentiated into stem, leaves, flowers, and fruits.
NCERT Solutions for Class 11 Biology Chapter 6: Anatomy of Flowering Plants
The learners will learn that anatomically, a plant is made of different kinds of tissues. The plant tissues are broadly classified into meristematic(apical, lateral, and intercalary) and permanent (simple and complex). The assimilation of food and its storage, transportation of water, minerals, and photosynthates, and mechanical support are the main functions of tissues.
Also, students will know that there are three types of tissue systems- epidermal cells, stomata, and epidermal appendages. The ground tissue system forms the main bulk of the plant. It is divided into three zones- cortex, pericycle, and pith.
NCERT Solutions for Class 11 Biology Chapter 7: Structural Organisation in Animals
This NCERT Class 11 Biology Chapter 7 Structural Organisation in Animals will enlight the students on the structure of various animals. They will know that earthworm, cockroach, and frog show characteristic features in body organisation. In Pheretima posthuma (earthworm), the body is covered by cuticle. All segments of its body are alike except the 14th, 15th, and 16th segments, which are thick, dark, and glandular, forming clitellum.
The body of cockroach (Periplaneta americana) is covered by chitinous exoskeleton. It is divided into head, thorax, and abdomen. Segments bear jointed appendages. There are three segments of thorax, each bearing a pair of walking legs. Two pairs of wings are present, one pair each on the 2nd and 3rd segment.
NCERT Solutions for Class 11 Biology Chapter 8: Cell- The Unit of Life
Students who read this chapter on Cell- the unit of life will be highlighted on the fact that all organisms are made of cells or aggregates of cells. Cells vary in their shape, size, and activities/functions. Based on the presence or absence of a membrane-bound nucleus and other organelles, cells and hence organisms can be named as eukaryotic or prokaryotic.
A typical eukaryotic cell consists of a cell membrane, nucleus, and cytoplasm. Plant cells have a cell wall outside the cell membrane. The plasma membrane is selectively permeable and facilitates the transport of several molecules.
NCERT Solutions for Class 11 Biology Chapter 9: Biomolecules
Through this class 11 chapter 9 Biomolecules, students will know that there is a bewildering diversity of living organisms, their chemical composition, and metabolic reactions appear to be remarkably similar. The elemental composition of living tissues and non-living matter appear also to be similar when analysed qualitatively.
The most abundant chemical in living organisms is water. There are 21 types of amino acids and 5 types of nucleotides. Fats and oils are glycerides in which fatty acids are esterified to glycerol.
NCERT Solutions for Class 11 Biology Chapter 10: Cell Cycle and Cell Division
The learners will learn that the stages through which a cell passes from one division to the next is called the cell cycle. The cell cycle is divided into two phases called Interphase- a period of preparation for cell division, and Mitosis- the actual periods of cell division. Students will also get to know that Metaphase is marked by the alignment of chromosomes at the equatorial plate.
During anaphase, the centromeres divide and the chromatids start moving towards the two opposite poles. Once the chromatids reach the two poles, the chromosomal elongation starts, nucleolus, and the nuclear membrane reappear.
NCERT Solutions for Class 11 Biology Chapter 11: Transport in Plants
Through this NCERT Class 11 Biology Chapter 11 Transport in Plants, students will learn that plants obtain a variety of inorganic elements (ions) and salts from their surroundings, especially from water and soil. The movement of these nutrients from the environment into the plant as well as from one plant cell to another plant cell essentially involves movement across a cell membrane.
Transport across cell membrane can be through diffusion, facilitated transport, or active transport. Also, the students will know that water and minerals absorbed by roots are transported by xylem, and the organic material synthesised in the leaves is transported to other parts of the plant through phloem.
NCERT Solutions for Class 11 Biology Chapter 12: Mineral Nutrition
This NCERT Class 11 Biology Chapter 12 Mineral Nutrition teaches the students that the basic needs of all living organisms are essentially the same. They require macromolecules, such as carbohydrates, proteins and fats, and water and minerals for their growth and development.
The chapter on Mineral Nutrition focusses mainly on inorganic plant nutrition, wherein students will also study the methods to identify elements essential to the growth and development of plants and the criteria for establishing the essentiality. The topic also introduces students briefly to the significance and the mechanism of biological nitrogen fixation.
NCERT Solutions for Class 11 Biology Chapter 13: Photosynthesis in Higher Plants
This chapter on Photosynthesis in Higher Plants will introduce students to the fact that green plants make their own food by photosynthesis. During this process, carbon dioxide from the atmosphere is taken in by leaves through stomata and used for making carbohydrates, principally glucose, and starch. Photosynthesis takes place only in the green parts of the plants, mainly the leaves.
Within the leaves, the mesophyll cells have a large number of chloroplasts that are responsible for CO2 fixation. Within the chloroplasts, the membranes are sites for the light reaction, while the chemosynthetic pathway occurs in the stomatal aperture.
NCERT Solutions for Class 11 Biology Chapter 14: Respiration in Plants
Through this chapter on Respiration in Plants, students will learn that all living organisms need energy for carrying out daily life activities, be it absorption, transport, movement, reproduction, or even breathing. All the energy required for ‘life’ processes is obtained by oxidation of some macromolecules that we call ‘food.’
Only green plants and cyanobacteria can prepare their own food by the process of photosynthesis they trap light energy and convert it into chemical energy that is stored in the bonds of carbohydrates like glucose, sucrose, and starch.
NCERT Solutions for Class 11 Biology Chapter 15: Plant Growth and Development
This chapter on class 11 Biology Chapter 15 Plant Growth and Development teaches students that growth is one of the most conspicuous events in any living organism. It is an irreversible increase expresses in parameters such as size, area, length, height, volume, cell number, etc. It conspicuously involves increased protoplasmic material. In plants, meristems are the sites of growth.
Root and shoot apical meristems sometimes along with intercalary meristem, contribute to the elongation growth of plant axes. Learners will also learn that growth is indeterminate in higher plants. Plant growth and development are under the control of both intrinsic and extrinsic factors.
NCERT Solutions for Class 11 Biology Chapter 16: Digestion and Absorption
This chapter focuses on the fact that the digestive system of humans consists of an alimentary canal and associated digestive glands. The alimentary canal consists of the mouth, buccal cavity, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and the anus.
The accessory digestive glands include the salivary glands, the liver (with gall bladder), and the pancreas. Inside the mouth, the teeth masticate the food, the tongue tastes the food and manipulates it for proper mastication by mixing with the saliva.
NCERT Solutions for Class 11 Biology Chapter 17: Breathing and Exchange of Gases
NCERT Class 11 Biology Chapter 17 Breathing and Exchange of Gases teaches the students that cells utilise oxygen for metabolism and produce energy along with substances like carbon dioxide which is harmful.
Animals have evolved different mechanisms for the transport of oxygen to the cells and for the removal of carbon dioxide from there. Also, the learners will know that the first step in respiration is breathing by which atmospheric air is taken in and the alveolar air is released out.
NCERT Solutions for Class 11 Biology Chapter 18: Body Fluids and Circulation
This chapter will teach the students that vertebrates circulate blood, a fluid connective tissue, in their body, to transport essential substances to the cells and to carry waste substances from there. Another fluid, lymph (tissue fluid) is also used for the transport of certain substances. Blood comprises a fluid matrix, plasma, and formed elements.
Red blood cells, white blood cells, and platelets constitute the formed elements. Blood of humans is grouped into A, B, AB, and O systems based on the presence or absence of two surface antigens, A, B on the RBCs.
NCERT Solutions for Class 11 Biology Chapter 19: Excretory Products and their Elimination
This NCERT Class 11 Biology Chapter 19 Excretory Products and their Elimination will teach students that many nitrogen-containing substances, ions, CO2, water, etc, that accumulate in the body have to be eliminated. The nature of nitrogenous wastes formed and their excretion vary among animals, mainly depending on the habitat (availability of water).
Protonephridia, nephridia, malpighian tubules, green glands, and the kidneys are the common excretory organs in animals. They not only eliminate nitrogenous wastes but also help in the maintenance of ionic and acid-base balance of the body.
NCERT Solutions for Class 11 Biology Chapter 20: Locomotion and Movement
This chapter teaches the students that movement is an essential feature of all living beings. Protoplasmic streaming, ciliary movements, movements of fins, limbs, wings, etc, are some forms exhibited by animals. A voluntary movement that causes the animal to change its place is called locomotion.
Animals move generally in search of food, shelter, mate, breeding ground, a better climate or to protect themselves. Students will also learn that muscle fibre is the anatomical unit of muscle. Each muscle fibre has many parallelly arranged myofibrils. Each myofibril contains many serially arranged units called sarcomere which is the functional unit.
NCERT Solutions for Class 11 Biology Chapter 21: Neural Control and Coordination
The neural system coordinates and integrates functions as well as metabolic and homeostatic activities of all the organs. Neurons, the functional units of the neural system are excitable cells due to a differential concentration gradient of ions across the membrane.
The electrical potential difference across the resting neural membrane is called the ‘resting potential.’ The human neural system consists of two parts: the central neural system and the peripheral neural system.
NCERT Solutions for Class 11 Biology Chapter 22: Chemical Coordination and Integration
Through this chapter, students will learn that there are special chemicals that act as hormones and provide chemical coordination, integration, and regulation in the human body. These hormones regulate the metabolism, growth, and development of our organs, the endocrine glands, or certain cells.
The endocrine system is composed of hypothalamus, pituitary and pineal, thyroid, adrenal, pancreas, parathyroid, thymus, and gonads (testis and ovary). In addition to these, some other organs, e.g., gastrointestinal tract, kidney, heart, etc, also produce hormones.
Some Important Questions For Class 11 Biology
Here we have provided some questions for Class 11 Biology. These will help you in knowing the subject better.
| 1. Name the guidelines for the naming of organisms? 2. Write the distinct characters of fungi & explain using a diagram. 3. Explain the life cycle in green algae? 4. How are non-chordates different from chordates. Write the major phyla of non-chordate & give examples. 5. Describe the various types of placentations found in flowering plants & represent diagrammatically. 6. What is wood? What are its different types? 7. What are the cellular components of blood? 8. Distinguish between prokaryotic & eukaryotic cell? 9. Explain briefly four levels of protein structure? 10. Explain the various phases of the meiosis II division? 11. Define transpiration? Why is it useful? Mention any three environmental factors that affect the transpiration? 12. Briefly explain the chemiosmotic hypothesis? 13. Explain the sequence of the development process in a plant cell. 14. Draw a labeled diagram of the human alimentary canal & Describe its different parts. 15. Describe in brief the respiratory organs of man. |
How To Prepare Class 11 Biology?
Biology requires a lot of attention to detail and remembering. Since the subject also contains a lot of diagrams we suggest you practice them frequently. Start by selecting a chapter and gather all the resources related to that. Read the chapter and keep on writing important points in a separate notebook. Once you have read the chapter start solving the intext and chapter-end questions, you can take the help of NCERT solutions provided by us as a reference guide.
To further aid you in your studies Embibe also provided free mock tests and practice questions. Solve as many questions as you can along with revising the previous topics.
These questions are formulated in a way so as to prepare you for any difficulty level that might come your way now or in the future. Along with solving the practice questions, you can also take to add an extra edge to your preparation. These mock tests provide detailed analysis along with areas where you excelled and where you need improvement.
| Class 11 PCMB Practice Questions | PCMB Class 11 Mock Test |
Some Frequently Asked Questions On NCERT Solutions For Class XI Biology
Below we have provided some FAQs that students generally ask:
Ans: To Prepare for Class 11 Biology study the chapter thoroughly, be committed, practice regularly, use NCERT solutions for your reference. For more details read this article.
Ans: We at embibe provide one of the best NCERT solutions for Class 11. These solutions cover all the intext and chapter-end exercise questions.
Ans: The cell wall in diatoms is made of silica & it forms 2 thin overlapping cells.
Ans: Brown algae
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