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NCERT Exemplar Class 12 Biology Solutions

NCERT Exemplar Solutions for Class 12 Biology can be an ideal resource for students facing difficulties in solving tricky questions asked in the CBSE Class 12 Board exams. NCERT Exemplar Class 12 Biology provides an array of questions like multiple-choice questions, very short answer type, short answer type, and long answer questions, etc. These questions will help you analyze the preparation level for your exam.

NCERT Exemplar Problems and Solutions for Class 12 Biology consists of 16 Chapters with detailed explanations of some important tables, diagrams, worksheets associated with it. Practicing these problems daily will help you out in revising the concepts of the Chapters easily. NCERT Exemplar Book of Class 12 Biology provides a brief description of some important topics like reproduction in organisms, sexual reproduction in flowering plants, reproductive health, molecular basis of inheritance, evolution, human health and diseases, ecosystem, environmental issues, human reproduction, concepts of inheritance and variation, biodiversity, biotechnology, and so on.

Instasolv solutions for NCERT Exemplar books can be an extremely helpful guide for you to revise your chapter. Our team of experts have worked hard to provide solutions to you with easy and detailed explanations. Therefore, we recommend you to solve these NCERT Exemplars problems by Instasolv, as these are framed as per your CBSE Class 12 Syllabus and contain questions that may be asked in your exam. Getting in regular touch with these questions will also help you ace the toughest competitive exams of the medical field like NEET, AIIMS.

Class 12

NCERT Exemplar Class 12 Biology Solutions Chapter 1: Reproduction in Organisms 

Reproduction in organisms chapter gives you knowledge about how the new offsprings are produced generation after generation. You will understand the types of reproduction in organisms such as sexual reproduction and asexual reproduction. Asexual reproduction gives you knowledge about budding, fragmentation, binary fission, vegetative propogation whereas sexual reproduction explains you about the events of sexual reproduction i.e. Pre-fertilization, Fertilization, and Post-Fertilization, etc. Also, you will get to learn about the advantages of sexual and asexual reproduction.

Total Number of Questions-  There are a total of 49 NCERT Exemplar problems in the chapter 1, in which 18 questions are MCQ type, 15  Very short answer type questions, 11 Short answer type, and rest 5 are Long answer type. These questions generally use the concepts which are mentioned above.

NCERT Exemplar Class 12 Biology Solutions Chapter 2: Sexual Reproduction in Flowering plants

Typically, Flowering plants involve both sexual and asexual reproduction. However, In this NCERT Exemplar Biology Chapter 2 you will understand how the flowering plants involve sexual reproduction. Further, you will be familiar with the different stages of sexual reproduction in flowers, and will learn about the pollination, process of formation of zygote, how the  fruits and seeds are formed. Also, understands about morphology of flowering plants and male and female reproductive parts of flowering plants, etc. 

Total Number of Questions- It has 53 problems in total. The questions are further categorized into MCQs, Very short answer type, Short answer type, and the last one long answer types. Typically, these questions test you on concepts like Pre-fertilisation, Double Fertilisation, Post-fertilisation, Apomixis etc. 

NCERT Exemplar Class 12 Biology Solutions Chapter 3: Human  Reproduction

As you know, reproduction is the vital process of forming younger ones identical to their parents. Also, we all are aware of the fact that reproduction in humans involves sexual reproduction also. Thus, Studying Human Reproduction chapter lets you understand how sexual reproduction in humans involves? Typically, you will learn two types of reproduction system in this chapter i.e. male and female reproductive system. Further, you will come across some important topics under this chapter like gametogenesis menstrual cycle, fertilization and implantation, about female’s pregnancy and embryonic development, parturition and lactation, etc.

Total Number of Questions- Class 12th Human Reproduction chapter has 48 questions in total, and are categorized into four subsections in a manner that will help you in understanding the concepts of this chapter easily.

NCERT Exemplar Class 12 Biology Solutions Chapter 4: Reproductive Health

Reproductive Health means how your body is functioning or what is the health status of your all body organs?. Thus, in this NCERT Exemplar chapter you will be aware of those health precautions and basic education that you must follow in your life, you will be given the basic information about all the reproductive organs, also about family planning, and so on. Apart from this, you will get to learn about some important aspects related to reproductive health such as Population stabilization and Birth control, Medical Termination of Pregnancy(MTP), and Infertility, etc.

Total Number of Questions- Chapter 4 has a total of 37 Exemplar problems. They are categorized into four types of questions based on  STDs, hormonal contraceptives, assisted reproductive technologies, population growth and so on. Questions like MCQs are often asked in your competitive exams.

NCERT Exemplar Class 12 Biology Solutions Chapter 5: Principle of inheritance and variation

We all know with the fact, when the new baby is born it inherits some hereditary characteristics or similar genes from their parents. Thus, Principle of inheritance and variation chapter of NCERT Exemplar Class12 Biology Textbook, gives you a perfect outlook of the heredity process in humans. Further,  you will understand how Mendel explains the characteristics of Inheritance with his law, and also familiar with the law of Independent Assortment. Apart from this, you will seek some information about the linkage and Assortment, about mutation and , mendelian disorders, etc.

Total Number of Questions-  This Chapter consists of 53 questions which are framed in a manner that will definitely aid you in understanding the concepts of inheritance and variation.

 NCERT Exemplar Class 12 Biology Solutions Chapter 6: Molecular basis of inheritance

Molecular Basis of Inheritance lets you understand the basic genetic information about humans. You will learn about some important traits of humans like DNA, RNA, about genes, and so on. Also, you will understand about types of RNA like Messenger RNA, transfer RNA, and Ribosomal RNA, etc. Apart from this you will learn about some vital aspects of this chapter that include coding and noncoding sequences of Nucleotides, about packaging of DNA helix, replication, transcription, polymorphism, DNA fingerprinting, etc.

Total Number of Questions- If we talk about no. of questions, this Chapter has 72 NCERT Exemplar problems divided into MCQ, Very short answer type questions, Short answer type, and Long answer types that will brush up your knowledge of the concepts of this chapter.

NCERT Exemplar Class 12 Biology Solutions Chapter 7: Evolution

Evolution is the study of different forms of life, involving what changes will be seen in organisms after generations. Thus, in this NCERT Exemplar chapter you will get to learn about two main theories which will give you a perfect outlook of this chapter. These theories are Darwin’s theory of evolution and lamarck’s theory. With the help of  these theories, you will learn about Origin of Life of organisms, about Evolution of Life Forms, What is the Evidence for Evolution?, Mechanism of Evolution, and so on. And you will also come across Hardy – Weinberg Principle.

Total Number of Questions- NCERT Exemplar Class 12th Biology Evolution Chapter has 52 questions in total. You need to go through each of the concepts thoroughly to solve the questions of this chapter.

NCERT Exemplar Class 12 Biology Solutions Chapter 8: Human Health and Diseases

Humans are always thinking that, if they have no diseases or illnesses that means they are fit and healthy. However, this sense of feeling can be wrong sometimes also. According to WHO a person’s health depends on the active and energetic condition of a body, also a balanced diet and regular exercise. Thus, In  chapter 8, you will be aware of common diseases that create illness in humans  and some fatal diseases like AIDS, and cancer too. You will also have knowledge about  immunity in humans once you read this chapter.

Total Number of Questions-  Well, This NCERT Exemplar Class 12 biology Chapter 8 has 70 important questions. You have to read this chapter carefully as these questions are important for your exam point of view.

NCERT Exemplar Class 12 Biology Solutions Chapter 9: Strategies for Enhancement in Food Production

You know, one of the major issues seen today is the rising population creates a shortage of food in our ecosystem. Thus, this Chapter will help you in understanding the different strategies and measures that are taken for an enhancement of food production. You will learn about some techniques like Animal Husbandry, Plant Breeding and so on. Also learn about Single Cell Proteins, Tissue Culture that plays a major role in enhancement of food production.

Total Number of Questions- There are a total of 77 Exemplar problems carved up into four different sections namely MCQs, Very short answer type, Short answer type, and Long answer type, respectively. Solving these questions will definitely help in making a grip over the concepts of this chapter.

NCERT Exemplar Class 12 Biology Solutions Chapter 10: Microbes in Human Welfare

You know, Microbes are an important biological component of our ecosystem. They are such tiny molecules, that can’t be seen through naked eyes. You need to see them through a microscope, and are listed as algae, fungi, bacteria, protozoa, virus, etc. Thus, this Chapter lets you understand about several concepts involving Microbes. Some of the major uses of microbes like in Household Products, Microbes in Industrial Products, Microbes in Sewage Treatment, Microbes in Production of Biogas, and many more. 

Total Number of Questions- This Chapter has 58 questions in it. You need to practice more and more of these questions to revise your chapter.

NCERT Exemplar Class 12 Biology Solutions Chapter 11: Biotechnology Principles and Process

Well, you know that everything in our ecosystem needs to be modified for future purpose and for human welfare. Therefore, biotechnology comes, it’s a broad technology which uses an application or characteristics of living organisms to modify it and makes useful products for human welfare. Thus, In this NCERT Exemplar Chapter you will study about those technologies and principles that will help in forming useful information from the organisms. You will be given knowledge about Genetic engineering, and about Bioprocess engineering, and so on. Also, you will learn about  the Principles of Biotechnology, Tools of Recombinant DNA Technology, and Processes of Recombinant DNA Technology, etc.

Total Number of Questions- This NCERT Exemplar Chapter has 39 Exemplar problems divided into 4 sections. These questions will help you understand the biotechnology principles, and  various processes associated with it.

NCERT Exemplar Class 12 Biology Solutions Chapter 12: Biotechnology and its Applications

In Biotechnology and its Applications chapter, you will be familiar with the applications of biotechnology in various fields such as: its applications in medical, in agriculture, and in aquaculture, etc. Also, you will learn about what transgenic animals are?,  about gene therapy, and about its production of antibiotics, etc.

Total Number of Questions-   This NCERT Exemplar Chapter has 57 questions in total and structured into four sections, that will  test your knowledge of the biotechnology and its applications in various fields.

NCERT Exemplar Class 12 Biology Solutions Chapter 13: Organisms and Populations

Have you ever heard about the term ecology? If not, then see it here. Well, ecology is the branch of biology which possesses interaction among organisms and their populations. Basically, there are four levels of organization of biology are there, you need to understand those in this particular NCERT Exemplar Chapter 13 of Class 12  Biology. They are: organisms, populations, communities, and biomes, etc..Further, you will also learn about some major topics i.e. the population attributes,  population growth and its growth models, population interactions such as predation, competition, parasitism, commensalism, and mutualism, etc.

Total Number of Questions- Chapter 13 has some very important 66 Exemplar problems based on the above mentioned topics. Practicing these will help you cover the concepts easily.

NCERT Exemplar Class 12 Biology Solutions Chapter 14: Ecosystem

Ecosystem is the biological community where living beings and non-living beings come in interaction with each other. Well, This chapter lets you understand the factors responsible for those interactions of living and non-living species. If we talk about the factors, they’re like Biotic and Abiotic factors. Further, you will learn about biotic components and Abiotic components that help in shaping our ecosystem. Also, this chapter explains to you about some important topics such as Ecosystem–Structure and Functions, Energy Flow, Ecological Pyramids, Ecological Succession Nutrient Cycling, Ecosystem Services, etc.

Total Number of Questions- There are 69 questions in this chapter will help you grasp the concepts of the chapter easily. 

NCERT Exemplar Class 12 Biology Solutions Chapter 15: Biodiversity and Conservation

In this NCERT Exemplar Chapter, you will study the Importance of biodiversity in the ecosystem. You will study the Patterns of biodiversity, Loss of biodiversity, and so on. Apart from this, you will get to learn about some conservation techniques also like Ex Situ and In Situ Conservation, etc. Then, At the end, you will be given knowledge to learn about the causes of loss of biodiversity, and the reasons of biodiversity conservation in the ecosystem.

Total Number of Questions- This Chapter Biodiversity and Conservation has 62 Exemplar problems and numerical illustrations based on various important topics discussed in the Chapter.

NCERT Exemplar Class 12 Biology Solutions Chapter 16: Environmental Issues

One of the major issues that we are facing today is the entrance of  impurities in our environment that creates an adverse effect on the living beings, plants, animals, air and the water bodies, etc. Well, In this Chapter, we are going to learn about these environmental issues like several kinds of pollution in the environment, greenhouse effect, ozone layer depletion, global warming, deforestation, and so on. 

Total Number of Questions- NCERT Exemplar Class 12 Biology Chapter 16 has 55 Exemplar problems based on the several environmental issues.

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