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NCERT Exemplar Class 12 Biology Solutions - Chapter Wise Problems with Solutions
The NCERT Exemplar class 12 biology deals with different concepts and principles of genetics, biodiversity, reproductive health, and microbes. The whole syllabus of biology is vast and contains important topics that, if studied well, will be helpful in higher studies and in entrance exams. The explanation covers various concepts and principles of genetics, biodiversity, reproductive health, and microbes. Practising the NCERT Exemplar class 12 solutions helps students prepare for their exams effectively without getting confused.
Live | Mar 30, 2026 | 12:30 AM IST
This Story also Contains
- Class 12 Biology NCERT Exemplar Chapter-Wise Links
- Weightage of Class 12 Biology Chapters
- Important Topics of NCERT Class 12 Biology
- Features and Benefits of NCERT Exemplar Class 12 Biology Solutions
Also, from the board's point of view, biology is a scoring subject if prepared well. Major concepts, diagrams, processes, and some new topics, such as biotechnology, should be given special attention. To make the chapters easy and learn how to solve the questions in the exam, understanding and observing the NCERT Solutions for Class 12 is necessary. Detailed answers to all the questions mentioned in the NCERT Exemplar class 12 biology solutions. are given by a team of subject experts, which help students improve their marks.
Class 12 Biology NCERT Exemplar Chapter-Wise Links
Below are the links for all the chapters added in the Class 12 biology. Each chapter includes a complete set of MCQs, short-answer questions, long-answer questions, and some extra questions to strengthen conceptual understanding.
Weightage of Class 12 Biology Chapters
The weightage for all the biology chapters given here is for the board exam. The mark distribution may vary slightly each year. Most of the questions are covered in Genetics and Reproduction. Questions from all the chapters will be included in the exam. So, for getting a good score, going through the Class 12 Biology NCERT Exemplar will be beneficial. The chapterwise distribution of marks is given in the following table:
| Chapter No. | Chapter Name | Weightage (Marks) |
|---|---|---|
| 1 | Reproduction in Organisms | 4 |
| 2 | Sexual Reproduction in Flowering Plants | 5 |
| 3 | Human Reproduction | 5 |
| 4 | Reproductive Health | 2 |
| 5 | Principles of Inheritance and Variation | 7 |
| 6 | Molecular Basis of Inheritance | 11 |
| 7 | Evolution | 4 |
| 8 | Human Health and Disease | 7 |
| 9 | Strategies for Enhancement in Food Production | 3 |
| 10 | Microbes in Human Welfare | 4 |
| 11 | Biotechnology: Principles and Processes | 6 |
| 12 | Biotechnology and Its Applications | 6 |
| 13 | Organisms and Populations | 4 |
| 14 | Ecosystem | 4 |
| 15 | Biodiversity and Conservation | 3 |
| 16 | Environmental Issues | 3 |
Total Theory Marks: 70
Important Points:
Highest Weightage:
Molecular Basis of Inheritance (11 marks)
Human Health and Disease, Principles of Inheritance and Variation (7 marks each)
Moderate Weightage:
Sexual Reproduction in Flowering Plants, Human Reproduction, and Biotechnology chapters (5–6 marks each)
Lower Weightage:
Environmental Issues, Biodiversity, Reproductive Health, Strategies for Enhancement in Food Production (2–4 marks each)
Must Read NCERT Solution Subject-wise
- NCERT solutions for Class 12 Maths
- NCERT solutions for Class 12 Physics
- NCERT solutions for Class 12 Chemistry
- NCERT solutions for Class 12 Biology
NEET Highest Scoring Chapters & Topics
Most Scoring concepts For NEET (Based On Previous Year Analysis)
Download EBookImportant Topics of NCERT Class 12 Biology
These are some of the important topics students need to focus on:
Reproduction: In class 12th NCERT, the very initial chapters cover the reproduction-related chapter in both plants and animals. These chapters cover topics like reproductive systems in flowering plants, sexual and asexual reproduction, reproductive health in humans, etc.
Genetics: One of the major parts of biology is genetics, as there are various principles, concepts, formulas, and laws to be understood under this. The syllabus covers genetic inheritance, genetic variations, DNA, RNA, replication, transcription, translation, amino acids, genetic flaws, and evolution. By going through the NCERT Exemplar class 12 biology, one will learn to create a base for higher studies in genetics.
Diseases and microbes: Learning about microbes, microbiology, their diversity, and their ecosystem can be highly helpful for those planning to pursue a future in medical science. The solutions cover topics like human health, various communicable diseases, food production using microbes, microbial processes that are useful for humans, etc.
Biotechnology: One of the most important and new topics that are covered in the Exemplar class 12 biology is biotechnology. Biotechnology covers different aspects of combining biology with technology. It encapsulated topics like genetic recombination, genetically modified organisms, vaccines, biotechnology processes, etc.
Ecosystem and biodiversity: These Exemplar class 12 biology cover ecosystem and population-related topics. These various topics are merged like ecosystem, biodiversity, symbiotic and other relations, environment, bioconservation, etc.
Also, check the NCERT Exemplar subject-wise
Features and Benefits of NCERT Exemplar Class 12 Biology Solutions
Some of the features of solutions that make them highly useful to students are:
Easy solutions: While solving questions or while understanding the topic, if the solutions are difficult to follow, then it becomes difficult for a student to retain the topic. We make sure that the topics and questions are explained in the simplest possible way in the NCERT Exemplar class 12 biology. This way, we do not miss any formula or important explanation, and make sure that the student understands everything in less time.
Marking scheme: Our experts are well aware of the fact that they mark the answers as per a pre-notified marking scheme. This means each and every step is given a certain mark when written in the answer sheet. Our experts keep that marking scheme in mind and then prepare the solutions. Thus, the students can find that if they solve in a very similar way, then the chances of scoring well and high in the exam become much easier.
Revise: Revising the topics well enough before attempting any exam is important. One can say that solving and understanding the Class 12 biology NCERT Exemplar is also a great way to do some last-minute revision. Using these solutions, one will learn about question patterns and also cover all the topics in the chapter shortly and crisply.
Also, check the NCERT Books and the NCERT Syllabus here
- NCERT Books Class 12 Biology
- NCERT Syllabus Class 12 Biology
- NCERT Books Class 12
- NCERT Syllabus Class 12
CBSE Class 12th Syllabus: Subjects & Chapters
Select your preferred subject to view the chapters
Frequently Asked Questions (FAQs)
Q: What makes the solutions understanding?
A:
The simple way of answering and the easy language used by us will make it easier for the students to grasp the idea quickly.
Q: Are the solutions as per the CBSE marking scheme?
A:
Yes, each and every question is solved by our team of experts as per the marking scheme of the CBSE
Q: What elements are added to the NCERT exemplar class 12 Biology solutions?
A:
Our biology solutions have a proper explanation, diagrams, charts, comparison as required by the questions.
Q: Are these NCERT 12th Biology exemplar solutions helpful in the entrance exam?
A:
Yes, these solutions are a great way to revise the topics covered in the chapter, and this is helpful in last-minute revision.
Q: How to use these solutions for preparation?
A:
One can use these class 12 Biology NCERT exemplar solutions as a referring point while solving questions of one's own.
Q: Do these solutions include diagrams and proper labeling where required?
A:
Yes, for questions where diagrams are necessary (like human physiology, genetics, reproduction, etc.), the solutions often include diagram-based explanations and correct labeling guidance, helping students understand how to present answers properly in exams.
Q: Are the solutions chapter-wise and easy to navigate for quick revision?
A:
Yes, the NCERT Exemplar Class 12 Biology solutions are generally arranged in a chapter-wise format, making it easy for students to quickly locate questions, revise important topics, and practice systematically before exams.
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Questions related to CBSE Class 12th
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Have a question related to CBSE Class 12th ?
Hi Madhuri,
For CBSE Class 12 Maths preparation, especially if your basics are weak, please refer to the link given below:
https://school.careers360.com/boards/cbse/cbse-class-12-maths-preparation-tips
Hi Jatin!
Given below is the link to access CBSE Class 12 English Previous Year Questions:
https://school.careers360.com/download/ebooks/cbse-class-12-english-previous-year-question-papers
For subjectwise previous year question papers, you might find this link useful:
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers-class-12
Dear Student,
If you have 6 subjects with Hindi as an additional subject and you have failed in one compartment subject, your additional subject which is Hindi can be considered pass in the board examination.
Hi,
The CBSE Class 10 Computer Applications exam (Set-1) was conducted on 27 February 2026 from 10:30 AM to 12:30 PM as part of the CBSE board exams. The paper included MCQs, very short answer questions, short answers, long answers, and case-study questions based on topics like HTML, networking, internet
Popular CBSE Class 12th Questions
A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is
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A particle is projected at 600 to the horizontal with a kinetic energy . The kinetic energy at the highest point
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In the reaction,
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How many moles of magnesium phosphate, will contain 0.25 mole of oxygen atoms?
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0.02 |
Option 2)
3.125 × 10-2 |
| Option 3)
1.25 × 10-2 |
Option 4)
2.5 × 10-2 |
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