NCERT Solutions for Class 12 Biology - Download Chapter wise PDFs
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  • NCERT Solutions for Class 12 Biology - Download Chapter wise PDFs

NCERT Solutions for Class 12 Biology - Download Chapter wise PDFs

Irshad AnwarUpdated on 23 Aug 2025, 12:33 PM IST

The NCERT Solutions for Class 12 Biology are important for students who want to score good marks in the exam. These solutions break down the complex concepts in simple words. Topics like reproduction, genetics, and ecology are covered in a well-understandable language by the experts. Along with answers, well-labelled diagrams are also added. The NCERT Solutions make learning more effective and build a strong foundation in the subject.

This Story also Contains

  1. Chapter-wise Class 12 Biology NCERT Solutions
  2. NCERT Solutions for Class 12 Biology: Chapter Details
  3. Key Features of NCERT Solutions for Class 12 Biology
NCERT Solutions for Class 12 Biology - Download Chapter wise PDFs
NCERT Solutions for Class 12 Biology (Chapter wise PDFs)

Class 12 Biology Solutions are very useful for learning the important biology concepts. A total of 13 chapters have been added to the class 12 biology syllabus. The solutions increase confidence and problem-solving skills. Students also understand how to attempt questions during exams confidently. Practising with NCERT Solutions for Class 12 prepares for examinations like NEET, as they focus on explanations and practice questions.

NCERT Solutions for Class 12 Biology: Chapter Details

The Class 12 covers a total of 13 chapters in Biology, including reproduction, genetics, microbes in human welfare, etc. All these chapters are well-explained in easy language. These solutions are designed to match the latest NCERT syllabus and are perfect for exam preparation. The Class 12 Biology NCERT Solutions include detailed, step-by-step answers to textbook questions.

Unit VI: Reproduction

Chapter 1: Sexual Reproduction in Flowering Plants

This chapter explains important processes such as pollination, fertilisation, and the formation of seeds. NCERT Solutions for Class 12 Biology PDF also help students understand the anatomy and functioning of the components of a flower. Students will learn about how flowers develop male and female reproductive parts. By understanding these processes, students can better appreciate how new plants are formed.

Chapter 2: Human Reproduction

This chapter includes the complete process of gamete formation (gametogenesis)in both males and females. In addition to understanding human reproductive systems, students will also explore components that form the male and female reproductive systems. The complete process of childbirth is explained in the Class 12 Biology NCERT Solutions with the help of images and flow charts.

Chapter 3: Reproductive Health

Reproductive Health is an important chapter under the 12th syllabus. It deals with the health and normal functioning of the reproductive organs. This chapter talks about important topics such as family planning, STDs, infertility, and birth control measures. Class 12 Biology Solutions make it easier for students to understand the concepts that usually appear in the exams.

Unit VII: Genetics and Evolution

Chapter 4: Principles of Inheritance and Variation

Principles of Inheritance and Variation is an important chapter in which students learn about genetics and heredity. This briefly discusses Mendel's Laws of inheritance, sex determination, mutation, and hereditary diseases. Class 12 Biology Solutions includes topics like dominant and recessive genes, mono and dihybrid crosses, and Punnett squares.

Chapter 5: Molecular Basis of Inheritance

This chapter focuses on the fundamental processes of genetic inheritance, covering DNA replication, transcription, translation, and gene expression. The NCERT Solutions for Class 12 Biology explain DNA as the genetic material in most organisms. The two types of nucleic acids found in living systems are DNA (Deoxyribonucleic acid) and RNA (Ribonucleic acid)..

Chapter 6: Evolution

This chapter explores interesting facts about the origin and the theories and mechanisms of evolution to prove these facts. It also includes the Miller-Urey experiment explains the origin of life on Earth. Different evidence from palaeontology, morphology, embryology, and genetics is added. Students will also learn about Darwin's Theory of Natural Selection and Lamarckism through the NCERT Solutions for Class 12 Biology.

Unit VIII: Biology and Human Welfare

Chapter 7: Human Health and Diseases

This chapter explains the most important points of human health and types of diseases. It talks about different kinds of immunity, like innate and acquired immunity, and how the immune system battles infections. Diseases such as bacterial, viral, fungal, and protozoan infections, along with their causes, symptoms, and prevention, are also explained. Lifestyle diseases like AIDS, cancer, drug addiction, and mental illness are also covered.

Chapter 8: Microbes in Human Welfare

This chapter will help students understand that while some microbes can be harmful, many are beneficial. Microbes help in the production of various food items, like dairy products such as curd, butter, bread, and tofu. Additionally, microbes are also used in the creation of important medicines, including penicillin. Other roles of microbes are included in the Class 12 Biology NCERT Solutions.

Unit IX: Biotechnology and Its Applications

Chapter 9: Biotechnology: Principles and Processes

Biotechnology Principles and Processes discusses the principles and methods applied to genetic engineering as well as microbial biotechnology. It includes discussions about recombinant DNA technology, restriction enzymes, cloning vectors, PCR, and bioprocess engineering. Students will find all the processes interesting to study, and thus increase the clarity of the concepts.

Chapter 10: Biotechnology and Its Applications

This chapter provides a detailed understanding of how biotechnology is used in various fields, including agriculture and medicine. It also highlights important topics such as genetically modified organisms (GMOs), transgenic animals, and ethical concerns. Solving the Class 12 Biology NCERT Solutions helps to understand concepts like gene therapy, biopesticides, and biofertilizers.

Unit X: Ecology and Environment

Chapter 11: Organisms and Populations

It describes how various organisms respond to their environment and how populations increase and evolve. It explains important factors such as ecological adaptations, interactions among organisms, and environmental factors influencing survival. All the topics of organisms and populations are well explained in the NCERT Solutions for Class 12 Biology PDF.

Chapter 12: Ecosystem

This chapter provides a thorough understanding of the interactions between living organisms and their physical environment. Students learn how ecosystems function, including food chains and food webs. It also explained the key processes like decomposition and biogeochemical cycles.

Chapter 13: Biodiversity and Conservation

It includes topics like species diversity, ecological balance, and conservation strategies. Biodiversity loss due to human activities is a major concern, making its conservation. NCERT Solutions for Class 12 Biology PDF includes concepts like endangered species, conservation strategies, and laws protecting biodiversity.

Also, Read NCERT Class-wise Solutions

Key Features of NCERT Solutions for Class 12 Biology

The solutions are designed to make learning easier for students by providing clear and exam-focused explanations. Some of the key features are given below:

  1. Solutions are described in simple language for better understanding.

  2. Answers are given in clear points, which allow students to quickly grasp the concepts.

  3. NCERT Solutions for Class 12 Biology are prepared that match the latest syllabus.

  4. They are effective for NEET and other medical entrance exams.

  5. Definitions and principles are explained without using technical terms and in easy language.

NCERT Solutions for Class 12 Subject-wise

Frequently Asked Questions (FAQs)

Q: Are the NCERT Solutions for Class 12 Biology reliable?
A:

Yes, the NCERT Solutions for Class 12 Biology are prepared by subject matter experts. So you can completely rely on the solutions.

Q: How do NCERT Solutions of Class 12 Biology help in exam preparation?
A:

The NCERT textbook questions are a great resource for helping students study in-depth and perform well in exams. Students can begin studying the NCERT Solutions for Class 12 Biology with efficiency, which will result in improved performance and results. In turn, this would help students gain a strong grasp of the curriculum.

Q: How to download NCERT Solutions for Class 12 Biology?
A:

Students can download and find the complete NCERT Solutions for Class 12 Biology through the Careers360 page. 

https://school.careers360.com/ncert/ncert-solutions-class-12

Q: Which book is best for Class 12 Biology?
A:

The NCERT Biology Textbook is considered to be the best book for the Class 12 exam. This book follows the latest syllabus and it serves as a good starting point for preparation for board exams.

Q: How many chapters are there in the NCERT book for Class 12 Biology?
A:

There are a total of 13 chapters in the NCERT Book for Class 12 Biology.

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