NCERT Solutions for Class 12 Biology: Free PDF - Embibe
  • Written By Varsha
  • Last Modified 03-08-2022
  • Written By Varsha
  • Last Modified 03-08-2022

NCERT Solutions for Class 12 Biology

NCERT Solutions of Class 12 Biology: Class 12 Biology is a vital subject for students who wish to pursue a career in medical science, zoology or botany. While studying Biology for the 12th board exam, students are advised to refer to NCERT Solutions for Class 12 Biology to learn important concepts and problem-solving strategies easily. We have provided NCERT Biology Class 12 Solutions PDF to help students in their exam preparations.

The solutions provided here are prepared by the top academic experts at Embibe, considering the CBSE Class 12 Biology Syllabus. These chapter-wise solved questions will help aspirants find more time for revisions and mock tests. Continue reading to access a free PDF of CBSE NCERT Class 12 Biology Chapter-wise solutions, along with sample practice papers, previous years’ papers and more.

NCERT Solutions for Class 12 Biology: Overview

Students in Class 12 must prefer referring to the Biology NCERT Solutions. These NCERT Solutions are designed in an easy-to-understand manner that helps clarify the students’ most complex concepts. Furthermore, these NCERT Solutions are also a great way to know about the exam pattern, marks distribution and the probable questions that will come in the examination. Students who have taken Science in Class 12 must follow the Class 12 Biology NCERT Solutions carefully.

Biology is all about definitions, diagrams and more. It consists of various chapters that require students to understand the concept properly. Therefore, the NCERT Solutions for Class 12 Biology is aimed at simplifying all these. Apart from theory, it also contains details about the practical exams that can help students in their board exams. Students must download the Class 12 Biology NCERT Solutions from the link given below.

Students can refer to these NCERT Solutions and kickstart their preparation for the boards and competitive exams. Students must ensure that they practice the questions and details given in the solution carefully to score higher marks in the respective examination.

NCERT Solutions for Class 12 Biology: Get Chapter-wise PDF

CBSE Class 12 Solutions for Biology will help students better understand various concepts and topics. Experienced academic experts curate Class 12 Biology Solutions provided here at Embibe. In this article, we have given chapter-wise PDFs of CBSE Class 12 NCERT Solutions:

Chapter NoChapter Name
Chapter 1Reproduction in Organisms
Chapter 2Sexual Reproduction in Flowering Plants
Chapter 3Human Reproduction
Chapter 4Reproductive Health
Chapter 5Principles of Inheritance and Variation
Chapter 6Molecular Basis of Inheritance
Chapter 7Evolution
Chapter 8Human Health and Disease
Chapter 9Strategies for Enhancement in Food Production
Chapter 10Microbes in Human Welfare
Chapter 11Biotechnology: Principles and Processes
Chapter 12Biotechnology and its Applications
Chapter 13Organisms and Populations
Chapter 14Ecosystem
Chapter 15Biodiversity and Conservation
Chapter 16Environmental Issues

Most students struggle to remember key terminology and frequently misinterpret various critical life processes. For example, chapters like Evolution, Genetics, and Biotechnology include a variety of concepts that many students find difficult to understand; thus, they choose to skip these. We at Embibe can ensure you that with the help of our NCERT Class 12 Biology Solutions, you will be able to understand any chapter of Class 12th Biology quickly and achieve better test scores.

CBSE NCERT Solutions for Class 12 Biology By Embibe: Advantages

The advantages of referring to CBSE NCERT Solutions of Class 12 Biology (NCERT Solutions Class 12 Biology) from this page are listed below:

  • All Biology NCERT Class 12 Solutions are written in a simple language so everyone can understand them.
  • The solutions provided here are by the subject matter experts of Embibe.
  • Each and every question is being solved based on the CBSE NCERT guidelines so that students can refer to these solutions for their board exam preparation.
  • Each and every question comes with a detailed, step-by-step solution to help students understand the concepts better.
  • The solutions will not only help students in their board exam preparation but will also help them clear competitive exams like NEET.

NCERT Solutions for Class 12 Biology: Chapter-wise Summary

Let us now look at the chapters of Class 12 Biology and what they deal with:

Chapter 1 – Reproduction in Organisms: Reproduction is an essential process without which species cannot exist for long. In order to produce progeny, each organism will have to reproduce sexually or asexually. The first chapter in CBSE NCERT Class 12 Biology deals with this. Learners will understand the difference between asexual and sexual means of reproduction.

Reproduction in organisms is a vast chapter dealing with various reproduction types. Students will be able to differentiate between sexual and asexual methods, zoospore and zygote, and more terms. The best way to score well in this chapter is by understanding each and every concept thoroughly.

Chapter 2 – Reproduction in Flowering Plants: We all love flowers as they are objects of aesthetic, ornamental, social, religious, and cultural value. They have also been used as symbols for conveying important human feelings such as love, affection, happiness, grief, mourning, etc. But did you know that flowers are the seat for sexual reproduction in plants (angiosperms)? Or that the myriads of flowers, the scents, and the rich colours are just an aid to sexual reproduction?

This chapter will take you through the internal parts of a flower and how each part plays a vital role in sexual reproduction. CBSE Class 12 Biology will also give you insights into the diversity of structures of the inflorescences that ensure the formation of the end products of sexual reproduction in plants such as fruits and seeds.

Chapter 3 – Human Reproduction: After the first two important chapters on reproduction, you will now be able to examine the human reproductive systems of males and females. This chapter will help you understand the changes that occur in human beings after the puberty and cease of ovum formation in women around the age of fifty years. 

Moreover, this chapter will give you a close look at the internal male and female reproductive parts along with the remarkable differences between them. Having good knowledge of this chapter will help you score well in the Class 12 exam. Also, this chapter is important for NEET.

Class 12 Biology SyllabusClass 12 Biology Book PDF Download

Chapter 4 – Reproductive Health: This chapter deals with the emotional and social aspects of reproduction and healthy reproduction. Basically, reproductive health refers to the total well-being in all aspects of reproduction, such as physical, emotional, behavioural, and social.

Through this chapter, you will learn that India was amongst the first countries in the world to initiate action programs at a national level to attain total reproductive health as a social goal. Counselling and creating awareness regarding adolescence and associated changes, safe and hygienic sexual practices, sexually transmitted diseases, etc., are a few of the practices in reproductive health.

Through the NCERT Solutions for Biology Class 12 Chapter Reproductive Health, you will get a deeper understanding of the general aspects of reproduction.

Chapter 5 – Principles of Inheritance and Variation: This chapter will give you a deeper knowledge of the term ‘Gene’ and answer several related questions of a branch of biology known as Genetics. This chapter deals with mainly the process of inheritance and the role of genes in differentiating the offspring of particular species.

Also, you will learn the definitions of the two most important terms in this chapter, i.e. inheritance as the basis of heredity and variation as the degree by which progeny differs from their parents. You will also come across a few crucial laws of inheritance, such as the Law of Dominance, Mendel’s Law, etc. This is one of the interesting chapters in Class 12 Biology.

Chapter 6 – Molecular Basis of Inheritance: This chapter will introduce Deoxyribonucleic Acid (DNA) and Ribonucleic Acid (RNA), the two types of nucleic acids found in living systems. 

In Class 11, you must have learned the structures of nucleotides. DNA is a long polymer of deoxyribonucleotides. The length of DNA is usually defined as the number of nucleotides present in it.

This chapter will help you identify the differences between RNA and DNA, along with their detailed structures. For a better understanding of the concepts related to DNA and RNA, ensure your basics from Class 9 are strong so that you go with the flow of this chapter – Molecular Basis of Inheritance.

Chapter 7 – Evolution: This can be one of the most interesting chapters of Class 12 Biology if you want to find the answers to the origin of life. The origin of life is considered a unique event in the history of the universe.

In fact, the universe is very old – almost 20 billion years old. And about 2000 million years ago, the first cellular forms of life appeared on earth. There are a lot of interesting theories and mythologies on how life originated on earth. Check them out and find answers using our NCERT Solutions for Class 12 Biology.

Chapter 8 – Human Health and Disease: Did you know that health does not constitute just the state of the body but the mind too? Health, in general, is a state of complete physical, mental and social well-being. 

This chapter will shed light on areas of genetic disorders, infections, the lifestyle of human beings, etc. Every day, we are exposed to a large number of infectious agents.

However, only a few of these exposures result in disease due to the lack of immunity. Here, you will learn the concepts of immunity and allergies in detail. You will also learn some cool public health measures that can safeguard you against infectious diseases.

Chapter 9 – Strategies for Enhancement in Food Production: With an ever-increasing population, the enhancement of food production is a major necessity. This chapter deals with the concepts related to food production organically. You will also come across sub-chapters such as animal husbandry, plant breeding, single-celled proteins, and tissue culture. Under animal husbandry, you will learn about fisheries, beekeeping, etc. You will also learn about apiculture and its importance in food production.

Chapter 10 – Microbes in Human Welfare: Microbes are organisms like bacteria and fungi that grow on nutritive media to form colonies and cannot be seen with naked eyes. In this chapter, you will come across some amazing facts, such as how microbes help in curd production from milk. Even many of the beverages are produced by a process called fermentation. While discussing the good side of microbe utilisation, this chapter will also take you through how it contributes to pollution.

Chapter 11 – Biotechnology: Principles and Processes: In this chapter, students will get to know how Biotechnology deals with the large scale production and marketing of products and processes using live organisms, cells, or enzymes. Also, students will know about the recombinant proteins that are used in medical practice.

Chapter 12 – Biotechnology and its Applications: This chapter will teach students about how Biotechnology has given various useful products by using plant, microbes, animals, and their metabolic machinery.

Biotechnology has also given rise to genetically modified organisms that have been created by using methods other than natural methods so as to transfer one or more genes from one organism to another, using techniques such as recombinant DNA technology. Students will also get to know that transgenic animals are also used to understand how genes contribute to the development of a disease.

Chapter 13 – Organism and Population: Ecology is the study of the interactions between the organism and its abiotic environment. It mainly deals with four levels of the biological organisation, namely organism, populations, communities, and biomes. The environment in which we all are living is composed of both abiotic and biotic components.

Water, light, temperature, and soil are the key components of the environment. Biotic components comprise all the living organisms within an ecosystem, which includes plants, animals, birds, insects, bacteria, fungi, and more. Abiotic components comprise all the non-living things in an ecosystem and includes sunlight, temperature, atmospheric gases, water, and soil.

Chapter 14 – Ecosystem: The ecosystem is a biological community of all living things, which includes plants, animals, birds, and other living organisms interacting with each other and with their non-living components in a particular region. The non-living components include atmosphere, earth, climate, sun, soil, and weather. Overall, the ecosystem is the network of interactions between and among organisms and their environment. Ecosystems consist of creatures that mutually benefit from each other. Students will learn about the ecosystem in detail in Chapter 14.

Chapter 15 – Biodiversity and Its Conservation: When a single species shows high diversity at the genetic level, it is called genetic diversity. When diversity is at the species level, it is called species diversity. Ecosystem-level diversity is called ecological diversity. Global diversity is divided into plants, vertebrates, and invertebrates.

In this chapter, students will learn about biodiversity, patterns of biodiversity, causes of loss of biodiversity, and biodiversity conservation.

Chapter 16 – Environmental Issues: Major issues relating to environmental pollution and the depletion of valuable natural resources vary in dimension from local and regional to global levels. Air pollution is caused by the burning of fossil fuels, e.g., coal and petroleum, in industries and in automobiles. They are harmful to humans, animals, and plants and, therefore, must be removed to keep our air clean.

There are two major types of environmental issues – the increasing greenhouse effect, which is warming the earth, and the depletion of ozone in the stratosphere.

In this chapter, students will learn about air pollution and its control, water pollution and its control, solid wastes, agrochemicals and their effects, radioactive wastes, greenhouse effect and global warming, ozone depletion in the stratosphere, degradation by improper resource utilisation and maintenance, and deforestation.

FAQs on CBSE NCERT Solutions for Class 12 Biology

Q.1: Where can I get all the solutions for Biology Class 12 NCERT exercise questions?

Ans: At Embibe, we have provided solutions to all the questions for Class 12 Biology. The solutions provided in this article are prepared by the top academic experts at Embibe as per the NCERT Biology book for Class 12.

Q.2: Where can I get CBSE NCERT Biology Class 12 exercise answers?

Ans: Students can download Biology NCERT Class 12 exercise questions and answers from here.

Q.3: How many chapters are there in NCERT Class 12 Biology?

Ans: There are 16 chapters in NCERT Class 12 Biology.

Q.4: Is studying from NCERT sufficient for Biology in the NEET Exam?

Ans: Students who rely on NCERT Solutions for their NEET preparation can score at least 75%+ in their NEET exams.

Q.5: How many chapters are there in NCERT Biology Class 12 Solutions?

Ans: There are a total of 16 chapters available in NCERT Solutions for Biology Class 12 for free.

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