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NCERT Solutions for CBSE Class 12 Biology
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NCERT Solutions for CBSE Class 12 Biology

Last Updated : 21 Apr, 2025
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CBSE Class 12th Biology NCERT Solutions 2023-24 is available here. These solutions will help students in their preparation for Class 12th CBSE Boards exams for the year 2023-2024. NCERT Solutions gives a detailed explanation of questions in the NCERT textbooks. By studying these solutions you will able to understand the logic behind the answers to questions.

Biology NCERT Solutions Class 12Biology is generally prepared by subject matter experts who have a deep understanding of each topic. This is a perfect guide that helps you to score good marks in your board examination. With the help of these solutions Class 12 Biology syllabus will become much easier to cover. The topics covered in the Class 12 NCERT Syllabus are important and carry significant weightage for competitive exams in India. NCERT Solutions also helps students to get a better understanding and develop a strong foundation for higher studies. 

Table of Content

  • Overview of Class 12 Biology NCERT Solutions
  • NCERT Solution for Class 12 Biology Chapter-wise List
  • Class 12 Biology Chapter 1 Sexual Reproduction in Flowering Plants 
  • Class 12 Biology Chapter 2 Human Reproduction 
  • Class 12 Biology Chapter 3 Reproductive Health
  • Class 12 Biology Chapter 4 Principles of Inheritance and Variation
  • Class 12 Biology Chapter 5 Molecular Basis of Inheritance
  • Class 12 Biology Chapter 6 Evolution
  • Class 12 Biology Chapter 7 Human Health and Diseases
  • Class 12 Biology Chapter 8 Microbes in Human Welfare
  • Class 12 Biology Chapter 9 Biotechnology Principles and Process
  • Class 12 Biology Chapter 10 Biotechnology and Its Application
  • Class 12 Biology Chapter 11 Organisms and Populations
  • Class 12 Biology Chapter 12: Ecosystem
  • Class 12 Biology Chapter 13 Biodiversity and Conversation

Overview of Class 12 Biology NCERT Solutions

Detailed overview of NCERT solutions for class 12 biology is given below -

Class

NCERT Class 12th

Subject

Class 12th Biology

Academic Year

2023-2024

Number of Chapters

16

Medium

English

Content Type

Text, Images and Notes

Available Material

Chapter Wise

NCERT Solution for Biology Class 12 Chapter at a Glance

NCERT Solution for Class 12 Biology will help students prepare for their Class 12 CBSE Biology Exam2023-24. Here you will find a comprehensive solution for each chapter of the Class 12 Biology textbook published by the National Council of Educational Research and Training (NCERT). This solution has a detailed chapter-wise explanation of Biology which will help you thoroughly understand the concepts accordingly. 

  • Chapter 2 Human Reproduction
  • Chapter 3 Reproductive Health
  • Chapter 4 Principles of Inheritance and Variation
  • Chapter 5 Molecular Basis of Inheritance
  • Chapter 6 Evolution
  • Chapter 7 Human Health and Diseases
  • Chapter 8 Microbes in Human Welfare
  • Chapter 9 Biotechnology Principles and Processes
  • Chapter 10 Biotechnology and Its Application
  • Chapter 11 Organisms and Populations
  • Chapter 12 Ecosystem
  • Chapter 13 Biodiversity and Conservation

Chapter 1: Sexual Reproduction in Flowering Plants 

In this Chapter, you will explore and learn about sexual reproduction in flowering plants. The class 12 Biology NCERT Solutions will guide you through the questions and solutions given in the textbook, which help students to understand the intricate process of reproduction in plants. These Solutions have been prepared by subject matter experts to excel in biology examinations.

Topics Covered in CBSE Chapter 1 Sexual Reproduction in Flowering Plants:

  • Flower structure
  • Pollination – types, agencies, and examples
  • Out breeding devices
  • Pollen-pistil interaction
  • Double fertilization
  • Post-fertilization events
  • Significance of seed dispersal and fruit formation

Chapter 2: Human Reproduction 

Human Reproduction Class 12 Biology This chapter focuses on the reproduction processes of human beings. This covers topics such as male and female reproductive systems, gametogenesis, fertilization, and pregnancy. Students can refer to these solutions to prepare for their Class 12th CBSE Biology board examinations. Learning about Human reproduction will also enhance students to gain conceptual knowledge. Chapter 2 Biology NCERT is an important topic for the Class 12 syllabus as it explains the detailed concept of human reproduction to the students.

Topics covered in Class 12 CBSE Biology Chapter 2 Human Reproduction:

  • Male and Female Reproductive System
  • Testis and Ovary
  • Gametogenesis
  • Menstruation Cycle
  • Fertilization
  • Embryo Development
  • Implantation of Embryo
  • Pregnancy and Placenta Formation
  • Parturition
  • Lactation

Chapter 3: Reproductive Health

This chapter focuses on various aspects of reproductive health, including the importance of reproductive rights, contraception, sexually transmitted infections, and infertility. These NCERT Solutions provided for this chapter will deepen your understanding and knowledge of reproductive health issues and their important significance in maintaining overall well-being. The NCERT Solutions for Class 12 Biology enable students to learn and understand topics for a long period of time.

Topics covered in CBSE Class 12 Biology Chapter3: Reproductive Health

  • Importance of Reproductive Health
  • Sexual Transmitted Disease and Its Prevention
  • Birth Controls
  • Methods to Control Pregnancy
  • Medical Termination of Pregnancy

Chapter 4: Principles of Inheritance and Variation

Chapter 4 delves into the principles of inheritance variation. It covers topics such as Mendelian genetics, inheritance patterns, genetic disorders, and the role of genes in determining traits. The NCERT Solutions have been made which aim to provide students with the best quality educational help available out there. Chapter 4 also helps you to learn more about the genetic variations that are passed on from parents to children on the basis of heredity.

Topics covered in Class 12 CBSE Biology Chapter 4 Principles of Inheritance and Variation:

  • Heredity 
  • Mendelian Genetics (Experiment)
  • Mendelian Inheritance
    • Co-dominance
    • Multiple Alleles
    • Incomplete Dominance
  • Pleiotropy
  • Polygenic Inheritance
  • Chromosomal Theory of Inheritance
  • Chromosomes and genes
  • Linkage and Crossing Over
  • Sex-linked Inheritance
  • Mendelian Disorders in Human

Chapter 5: Molecular Basis of Inheritance

NCERT Biology Class 12 Chapter 5 focuses on the molecular basis of inheritance which explores different topics such as DNA replication, gene expression, regulation of gene expression, and genetic code. The Solution of Chapter 5 Biology is prepared by an expert subject matter so that students are able to dive deep into topics. By understanding these topics students will be able to score well in their board examination and also it helps them for any competitive exams. The NCERT Solutions provide you to understand the intricate molecular mechanisms that govern inheritance and gene expression.

Topics covered in CBSE Chapter 5 Molecular Basis of Variation:

  • Search for Genetic Material
  • DNA and RNA
  • DNA Packaging
  • DNA Replication
  • Central Dogma
  • Transcription
  • Genetic Code
  • Translation
  • Gene Expression and Regulation
  • Human Genome Project
  • DNA Fingerprinting

Chapter 6: Evolution

Class 12 Biology NCERT chapter 6 includes topics such as the Origin of Life, Biology Evaluation, Hardy - Weinberg Principle, Adaptive Radiation, and so on. You will be able to get a proper detailed explanation of each and every topic that will help you to score well in your board examination and also any competitive exam for higher studies. There are a number of solutions present here which will aid you in comprehending the fundamental principles underlying inheritance and variation.

Topics covered in CBSE Chapter 6 Evolution:

  • Origin of Life
  • Biological Evolution
  • Evidence for biological evolution
  • Darwin’s Theory and Postulates
  • Lamarckism
  • Modern synthetic theory of evolution
  • Mutation and Recombination
  • Natural selection
  • Types of Natural Selection
  • Gene Flow and Genetic Drift
  • Hardy-Weinberg's Principle
  • Human Evolution

Chapter 7: Human Health and Diseases

This Chapter mainly focuses on different aspects of human health and diseases. Biology is a vast field that deals with life form and their processes understanding some concepts of each topic also helped in controlling infectious diseases in different ways. These NCERT Solutions provided for this chapter will deepen your understanding and knowledge of human health and diseases. The NCERT Solutions for Class 12 Biology enable students to learn and understand topics for a long period of time.

Topics covered in class 12 CBSE Chapter 7 Human Health and Diseases:

  • Pathogens
  • Parasites Causing Human Disease
  • Control of Human Disease
  • Basic Concepts of Immunology
  • Active and Passive Immunity
  • Vaccines
  • Cancer
  • Adolescence-Drug and Alcohol Abuse

Chapter 8: Microbes in Human Welfare

The NCERT Solution of Class 12 will aid you in comprehending the role of microbes in different types of beneficial applications. This Chapter covers topics such as microbial, antibiotics, and biocontrol agents. Chapter 8 of biology CBSE syllabus describes briefly Microbes in Human Welfare and how they are beneficial for us accordingly. Microbes generally are entities that are not seen by the naked eye. The feature of NCERT Solutions for class 12 Biology is that the solution area is accurate without any error and students get a thorough understanding of the crucial concepts using the NCERT Solutions.

Topics covered in CBSE Chapter 8 Microbes in Human Welfare:

  • Microbes in Food Processing
  • Microbes in Industrial Production
  • Microbes in Sewage Treatment
  • Microbes in Energy Generation
  • Microbes as Biocontrol agents and Bio Fertilizer
  • Antibiotics Production

Chapter 9: Biotechnology Principles and Process

Chapter 9 Biotechnology Principles and Process generally focuses on Biotechnology. The NCERT Solution of Chapter 9 provides you with a deeper understanding of the principles and applications of biotechnology. You will be able to excel in your biology board examinations and other competitive examination. It covers topics such as DNA Technology, recombinant DNA technology, genetic engineering, and application of Biotechnology.

Topics covered in CBSE Chapter 9 Biotechnology Principle and Process:

  • Recombinant DNA Technology
  • Vectors
  • Manufacturing of Antibiotics, Drugs, Vaccines

Chapter 10: Biotechnology and Its Application

Chapter 10 of Class 12 Biology syllabus explores the application of Biotechnology in various fields, Before going through this chapter you need to have a clear understanding of Chapter 9 which is about Biotechnology principles and processes. These solutions are generally prepared by subject matter experts who have a deep understanding of each topic. This is a perfect guide that helps you to score good marks in your board examination. NCERT Solutions also helps students to get a better understanding and develop a strong foundation for higher studies.

Topics covered in CBSE Chapter 10 Biotechnology and Its Application:

  • Application of Biotechnology in Health and Agriculture
  • Human insulin and vaccine production
  • Stem cell technology
  • Gene therapy
  • Genetically modified organisms

Chapter 11: Organisms and Populations

Chapter 11 explores the intricate relationship between organisms and populations in ecosystems. Chapter 11 of Class 12 Biology covers topics such as biodiversity, ecological adaptions, population growth, interactions between species, and ecological succession. The NCERT Solutions which is available here will aid you in deeper concepts of the dynamics of organisms and populations in different ecosystems.

Topics covered in CBSE Chapter 11 Organisms and Population:

  • Population interactions: mutualism, competition, predation, parasitism
  • Population attributes growth, birth rate, and death rate, age distribution.

Chapter 12: Ecosystem

Ecosystem Chapter 12 delves into the concept of ecosystems and their other components. These subtopics include such as Energy Flow, nutrient cycling, ecological pyramid, and ecological services provided by the ecosystem. These NCERT Class 12 Solutions present here will help you to understand the functioning and importance of the Ecosystem and the required balance for their sustainability. These solutions are generally prepared by subject matter experts who have a deep understanding of each topic. This is a perfect guide that helps you to score good marks in your board examination. NCERT Solutions also helps students to get a better understanding and develop a strong foundation for higher studies.

Topics covered in CBSE Chapter 12 Ecosystem:

  • Ecosystems
  • Patterns
  • Components
  • Productivity
  • Decomposition
  • Energy flow
  • Pyramids of numbers, biomass, energy

Chapter 13: Biodiversity and Conversation

In this Chapter, you will learn about Biodiversity and the significance of the need for its conversation. This Chapter includes biodiversity hotspots, threats to biodiversity, biodiversity hotspots, and the role of national parks and wildlife sanctuaries. This NCERT solution has provided you with the necessary topics to enhance your understanding of the subject. Regular practice and learning can help you to score well in your board examination.

Topics covered in CBSE Chapter 13 Biodiversity and Conversation:

  • Biodiversity – Concept, patterns, importance; loss of biodiversity
  • Biodiversity conservation; hotspots
  • Endangered organisms
  • Extinction
  • Red Data Book
  • Sacred Groves
  • Biosphere reserves
  • National parks, wildlife, sanctuaries, and Ramsar sites.

Conclusion - NCERT Class 12 Solution Biology

In Conclusion, NCERT solutions of class 12th biology for the year 2023-2024 are valuable resources for students of all classes which helps them to get a better understanding of the logic used to solve a question with a comprehensive knowledge of the subjects. It helps to build a strong foundation for further studies. NCERT Solutions forClass 12th Biology Chapter-Wise provides a comprehensive understanding of the material covered in their class.


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