NCERT Solutions for Class 12 Biology

NCERT Solutions for Class 12 Biology in Hindi Medium and English Medium | Download Class 12th Biology NCERT Textbook Solutions

NCERT Solutions of Class 12 Biology helps students to learn the CBSE Syllabus much efficiently. Biology NCERT Solutions for Class 12th are given by highly experienced experts. We have mentioned the CBSE Biology 12th Class NCERT Solutions in Hindi & English Mediums in a simple and easy-to-understand language so that you can comprehend it better. You can recall the important topics with ease by practicing the questions in the Class 12 NCERT Textbook Solutions.

NCERT Solutions for Class 12 Biology in Hindi Medium and English Medium (जीव विज्ञान)

Class 12 Biology NCERT Solutions Class 12 Biology NCERT Solutions in Hindi Medium
Class 12 Biology Chapter 1 Reproduction in Organisms  जीवों में जनन
Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants  पुष्पी पादपों में लैंगिक प्रजनन
Class 12 Biology Chapter 3 Human Reproduction  मानव जनन
Class 12 Biology Chapter 4 Reproductive Health  जनन स्वास्थ्य
Class 12 Biology Chapter 5 Principles of Inheritance and Variation  वंशागति और विविधता के सिद्धान्त
Class 12 Biology Chapter 6 Molecular Basis of Inheritance  वंशागति का आणविक आधार
Class 12 Biology Chapter 7 Evolution  विकास
Class 12 Biology Chapter 8 Human Health and Disease  मानव स्वास्थ्य तथा रोग
Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production  खाद्य उत्पादन में वृद्धि की कार्यनीति
Class 12 Biology Chapter 10 Microbes in Human Welfare  मानव कल्याण में सूक्ष्मजीव
Class 12 Biology Chapter 11 Biotechnology: Principles and Processes  जैव प्रौद्योगिकी-सिद्धान्त व प्रक्रम
Class 12 Biology Chapter 12 Biotechnology and its Applications  जैव प्रौद्योगिकी एवं उसके उपयोग
Class 12 Biology Chapter 13 Organisms and Populations  जीव और समष्टियाँ
Class 12 Biology Chapter 14 Ecosystem  पारितन्त्र
Class 12 Biology Chapter 15 Biodiversity and Conservation  जैव विविधता एवं संरक्षण
Class 12 Biology Chapter 16 Environmental Issues  पर्यावरण के मुद्दे

Class 12th Biology NCERT Book Solutions

Practice the Questions from Biology NCERT Solutions for Class 12 regularly and attempt the exam with confidence. 12th Class Biology NCERT Book Solutions cover all the concepts in a concise manner. Our NCERT Solutions of Class 12 Biology are given in a way that it helps students to better frame answers. In addition to these, you can also find CBSE Class 12 Biology Notes, MCQ Questions for Class 12 Biology with Answers to complement your preparation.

NCERT Solutions Class 12 Biology Chapter Details

Chapter 1: Reproduction in Organisms

In this chapter, you will learn about how various organisms procreate. Important processes i.e. Reproduction is explained and how organisms give rise to other young ones and their types are also described. If offspring are reproduced with a single parent without gamete then it is known as asexual reproduction. Whereas in the reproduction process if two parents of opposite sex i.e. male and female gametes are involved then it is called sexual reproduction.

Chapter 2: Sexual Reproduction in Flowering Plants

Chapter 2 of Class 12 Biology covers topics Flower structure, development of male and female gametophytes, pollination types, agencies, and examples, pollen-pistil interaction, outbreeding devices, double fertilization, post-fertilization events. Other concepts such as the development of seed, and formation of fruit,  development of endosperm and embryo, special modes apomixis, polyembryony, parthenocarpy, Significance of seed dispersal, and fruit formation are all discussed.

Chapter 3: Human Reproduction

This chapter covers information on Male and female reproductive systems, microscopic anatomy of testis and ovary, spermatogenesis, gametogenesis, and oogenesis, fertilization, menstrual cycle, embryo development upto blastocyst formation, pregnancy, implantation, and placenta formation, lactation, parturition.

Chapter 4: Reproductive Health

This Chapter 4 includes topics like the Need for reproductive health and prevention of Sexually Transmitted Disease, birth control need and methods, contraception, medical termination of pregnancy (MTP), amniocentesis, infertility, and assisted reproductive technologies – IVF, ZIFT, GIFT.

Chapter 5: Principles of Inheritance and Variation

In this chapter 5, you will learn about the topics Heredity and variation, Mendelian inheritance, deviations from Mendelism, incomplete dominance, co-dominance, multiple alleles and inheritance of blood groups, pleiotropy.

Furthermore, you will get acquainted with topics such as the elementary idea of polygenic inheritance, chromosomes, and genes, chromosome theory of inheritance, Sex determination in human beings, birds, and honey bee, sex-linked inheritance – hemophilia, color blindness, linkage, and crossing over, Mendelian disorders in humans thalassemia, chromosomal disorders in humans, Down’s syndrome, Turner’s and Klinefelter’s syndromes.

Chapter 6: Molecular Basis of Inheritance

Concepts like genetic material, DNA as genetic material, Structure of DNA and RNA, DNA Packaging, DNA Replication, genetic code, gene expression, transcription, translation, and regulation – lac operon, Genome, Human and rice genome projects, DNA fingerprinting are included in this chapter.

Chapter 7: Evolution

In this chapter 7 Evolution is the study of the history of life forms on earth. You will find subtopics such as Origin of Life, Evolution of Life Forms A Theory, What are the Evidences of Evolution, Biological Evolution, Mechanism of Evolution, Hardy – Weinberg Principle, A Brief Account of Evolution, Origin, and Evolution of Man related to Evolution are explained clearly.

Chapter 8 Human Health and Diseases

In Chapter 8 you will find topics like Pathogens, parasites causing human diseases (malaria, dengue, chikungunya, filariasis, ascariasis,  pneumonia, typhoid, common cold, ringworm, amoebiasis) and their control, Basic concepts of immunology such as vaccines, HIV, and AIDS, cancer, Adolescence drug, and alcohol abuse.

Chapter 9 Strategies for Enhancement in Food Production

With the growing population of the world, there is a major need for food production. Biological principles, as applied to animal husbandry and plant breeding are vital for increasing food production. Techniques like embryo transfer technology and tissue culture techniques also enhance food production. Subtopics like Animal Husbandry, Single Cell Proteins, Plant Breeding, and Tissue Culture are discussed.

Chapter 10: Microbes in Human Welfare

In Chapter 10, we will deal with topics such as microbes in food processing, sewage treatment, industrial production, energy generation, microbes as biocontrol agents, and bio-fertilizers, Antibiotics production, and judicious are discussed.

Chapter 11: Biotechnology Principles and Processes

Biotechnology deals with the process of using live organisms or enzymes from organisms to produce products useful for humans. As per the European Federation of Biotechnology biotechnology is all about encompassing both traditional views and modern molecular biotechnology. EFB States biotechnology as the integration of natural science and organisms, parts thereof, cells, and molecular analogues for products and services. Subtopics listed in the chapter are Principles of Biotechnology, Tools of Recombinant DNA Technology, and Processes of Recombinant DNA Technology.

Chapter 12: Biotechnology and its Application

In Chapter 12 of CBSE Biology Class 12 Syllabus students will find topics like Application of biotechnology in health and agriculture, stem cell technology, Human insulin and vaccine production, gene therapy, genetically modified organisms – Bt crops, transgenic animals, biopiracy, biosafety issues, and patents.

Chapter 13: Organisms and Populations

Topics covered in Class 12 Chapter 13 Organisms and Populations are Organisms and environment, Habitat and niche, population interactions – mutualism, competition, predation, parasitism, population attributes like growth, birth rate and death rate, age distribution, population and ecological adaptation.

Chapter 14: Ecosystem

In this chapter 14 you will get acquainted with concepts like Ecosystems that can be visualized as a functional unit of nature, in which living organisms interact among themselves and with the surrounding physical environment.

Chapter 15: Biodiversity and Conservation

This chapter includes topics like Genetic diversity,Ecological diversity, Species diversity, Different types of Species, Loss of Biodiversity, Biodiversity Conservation, Patterns of Diversity, etc. Furthermore, concepts of hotspots, endangered organisms, Red Data Book, extinction, national parks, Sacred Groves, biosphere reserves, sanctuaries, wildlife, and Ramsar sites are explained here.

Chapter 16: Environmental Issues

This Chapter 16 deals with concepts of reproduction, evolution, inheritance, food production, ecosystem, biotechnology, biodiversity, are explained in-depth. Subtopics such as Water Pollution and Its Control, Air Pollution and Its Control, Agrochemicals and their Effects, Solid Wastes, Radioactive Wastes, Greenhouse Effect and Global Warming, Degradation by Improper Resource Utilisation and Maintenance, Ozone Depletion in the Stratosphere, Deforestation are explained.

CBSE Class 12 Syllabus Course Structure 2021-22

Units Term – I Marks
VI Reproduction: Chapters – 2, 3 and 4 15
VII Genetics and Evolution: Chapters – 5 and 6 20
Units Term – II Marks
VIII Biology and Human Welfare: Chapter – 8 and 10 14
IX Biotechnology and its Applications: Chapter – 11 and 12 11
X Ecology and Environment: Chapters – 13 and 15 10
Total Theory (Term – I and Term – II) 70
Practicals Term – I 15
Practicals Term – II 15
Total 100

Benefits of Class 12 Biology NCERT Solutions PDF

There are several perks of solving the questions from the Class 12th NCERT Solutions of Biology and they are as beneath

  • Class 12 NCERT Solutions for Biology Book are given by experts and you need not worry about the accuracy.
  • Content Formulated in the 12th Class NCERT Book Solutions is as per the Latest CBSE Curriculum.
  • Our Comprehensive Collection of Class 12 NCERT Solutions include fundamental concepts.
  • All the Solutions provided are given in a jargon-free and easy to understand language.
  • You can use the best resource available for CBSE Exam Preparation either online or offline at your convenience.

FAQs on NCERT Solutions Class 12th Biology

1. Is NCERT enough for CBSE Class 12 Biology?

Yes, NCERT is more than enough to prepare for the CBSE Class 12 Biology as they give you complete knowledge of the concepts in the syllabus.

2. How can I get good marks in Biology Class 12?

You can get good marks in Biology Class 12 by practicing from the right preparation material. Solve as many previous question papers, notes, available and score well in exams.

3. Where can I get free study material for CBSE Class 12 Biology?

You can get free study material for CBSE Class 12 Biology on a trusted portal for all your needs.

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