CBSE Class 12 Biology Important Questions & Notes Chapter Wise PDF

CBSE Class 12th Chapter Wise Biology Important Questions And Answers and class 12 Biology important notes PDF. Biology has the vastest syllabus in all of the science stream and this is one of the reasons why it is difficult for most of the students. But you should know that the correct way to study and revise this subject is by working smart and studying from a proper material or source, you will get biology class 12th chapter wise important questions with the solution and CBSE class 12 Biology important notes in pdf file here in this article and you can download the free chapter wise questions.

The CBSE Class 12 Biology important questions presented in this article have been chosen down after a lot of research and these will give you an idea of the type of questions that you are going to be facing in your exams. The solution of these important makes it easier for you to learn it and it also works as a good revision material, you can download them here for free.

You can also practice more helpful study material for CBSE 12th Biology given in the table below:

CBSE 12th Biology Study Material
CBSE 12th Biology Previous Year Solved Papers
CBSE Class 12th Biology Sample Papers pdf

CBSE Class 12 Biology Important Questions & Notes Chapter Wise PDF

You will get all the important and expected questions for your upcoming board exam biology in this article, the chapter wise list of pdf files which contains these important questions will be mentioned in the next paragraph and you can click on the chapter to get the important questions and important notes from that concerned chapter.

The CBSE class 12th biology important chapter wise questions are the most important tool for you to prepare for your board exams. Continues practice and learning of the important questions will ensure a good scoring of marks in the exams. These important questions are found out after long research from previous year papers, sample papers and bear resemblance to the type of questions that you may face in your exams to give you an idea.

Here is a list of all the chapters in class 12th biology and by clicking on the chapter you will get the most important questions and notes that could come in your exams. Download and practice these important questions for class 12 Biology chapter wise pdf file.

Buy Solutions For Class 12 Biology Important Questions Chapter wise

Chapter wise important questions for other subjects

CBSE 12th Important Question
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CBSE 12th Chemistry Important Question Chapter Wise

These important questions also work as quick revision notes for class 12 biology.

After downloading these chapter wise notes and chapter wise important questions of class 12 Biology, Let’s have a look at the analysis and research we have done on each chapter of 12th biology. this analysis will greatly help you in preparing in your final exams.

This analysis will also help you in making preparation strategy and making Biology notes for class 12 chapter wise. The analysis we have done on the basis of the type of questions (theory based, numerical based, diagram based, etc), length/mark of the question (very short, long, and very long).

Preparing Chapter Wise Important Questions of CBSE Class 12th Biology

You should know that before you start solving and learning from the class 12 biology important questions and important notes, you should be focusing more on learning the basics of the subject. After you are done studying from your books and began understanding the subject perfectly, after that you can easily attempt all these questions and solve them easily without using the solutions.

Important Questions and Additional Detail About the Chapters

The description given below is about how much each chapter weighs, it basically gives you an idea about the most important chapters in the syllabus of class 12 Biology, so you can focus more on the chapters which are important for scoring good marks.

You will be told about the type of questions that come in the exam and which chapter has the most probability of which type of questions and the presence of diagrams and numerical (if any) in the chapter.

After analysing these cbse class 12 Biology important questions chapterwise, we have came across with some facts and figures which could very helpful for your board exam preparation for 12th Biology. Here are the Facts and figures for Class 12 Biology.

#Chapter 1: Reproduction in Organisms

The first chapter of 12th Biology i.e., Reproduction in Organisms, contains mostly the very short and short answer type questions, there are not many diagrams and numerical and it is an important chapter in terms of preparing for short answer questions and should be given good importance. You can make short revision notes from this chapter.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	High
Short Answer Questions (S.A.) (2 Marks)	Medium
Long Answer Questions (L.A.) (3 Marks)	Low
Very Long Answer Questions (V.L.A.) (5 Marks)	Nil

#Chapter 2: Sexual Reproduction in Flowering Plants

The second chapter of class 12 Biology i.e., Sexual Reproduction in Flowering plants, has the most density of questions and the questions of all types come from this chapter whether short or long, and this chapter should be the first one on your list of the most important chapters of Biology. It also contains a decent amount of diagram questions and should be given the most importance. while making notes from this chapter don’t forget to practice well labeled diagram.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks)	High
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks)	Medium

#Chapter 3: Human Reproduction

This chapter contains all type of questions i.e. all the short and long answer questions but the most important of them all are the long and very long answer questions which contain diagrams also which makes this chapter one of the most important chapter too.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Low
Short Answer Questions (S.A.) (2 Marks)	Low
Long Answer Questions (L.A.) (3 Marks) (Diagrams)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Medium

#Chapter 4: Reproducting Health

Reproducting Health is important when you are focusing more on the short answer questions, this chapter contains a nearly negligible amount of diagrams and is a little less important. But you should not take it lightly and practice it too. So you make notes and practice short questions.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks)	High
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks)	Nil

#Chapter 5: Principles of Inheritance and Variation

This is the most important chapter in 12 Biology text book and a lot of questions are expected from this chapter always. This chapter is important in all aspects as it covers all the segments of the type of questions and also the number of diagram questions are quite high and this is the chapter which also provides the numerical type questions in it’s short and long answer type questions.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	High
Short Answer Questions (S.A.) (2 Marks) (diagrams and numerical)	High
Long Answer Questions (L.A.) (3 Marks) (diagrams and numerical)	High
Very Long Answer Questions (V.L.A.) (5 Marks) (diagrams)	Medium

#Chapter 6: Molecular Basis of Inheritance

Majority of the questions from this chapter which comes in the examination are the very short, short and long type questions with a little from the very long answer questions. The quantity of diagram questions is also quite high as compared to the other chapters. And overall we can say that this can come under the category of important chapters.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	High
Short Answer Questions (S.A.) (2 Marks) (diagrams)	Medium
Long Answer Questions (L.A.) (3 Marks) (diagrams)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (diagrams)	Low

#Chapter 7: Evolution

Chapter 7 is a little less important than the 6th chapter and is important for preparing for 1 mark and 3 marks questions, it neither contains any diagram nor any numericals and is a little less important on the importance scale.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks)	Low
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks)	Low

#Chapter 8: Human Health and Disease

This chapter is also quite important as the density of 1,2 and 3 marks questions is high and there are very less chances that a 5 mark question will come in your exam. The diagrams are very important and are mostly asked in the long answer questions category, so this chapter should also be given more focus.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks)	High
Long Answer Questions (L.A.) (3 Marks) (diagrams)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks)	Low

#Chapter 9: Strategies for Enhancement in Food Production

The density of the questions in this chapter is moderate so it comes in the category of important chapters and the 5 marks questions may require diagrams and the explanation and the chances are that one Very long questions could be from this chapter.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks)	Medium
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (diagrams)	Low

#Chapter 10: Microbes in Human Welfare

Short answer and long answer type questions are the most important questions that could be asked from this chapter. There is a very little chance that you may be asked a diagram question from this chapter but nevertheless you should practice the diagrams as these are the most scoring parts of this subject and there is very less scope for the 5 marks questions to come in the exam.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Low
Short Answer Questions (S.A.) (2 Marks)	Medium
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks)	Nil

#Chapter 11: Biotechnology Principles and Processes

This chapter comes under the category of the most important chapter and the density of the questions in all categories of questions is the highest among all the other chapters. With diagrams and a very wide range of short answer questions this is considered to be one of the most important chapter of the subject.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks) (Diagrams)	High
Long Answer Questions (L.A.) (3 Marks) (diagrams)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Low

#Chapter 12: Biotechnology and its Application

The question density in this chapter is not too much, but there are questions for all categories and types with diagrams, so that makes it an important chapter in biology and should be given importance while preparing for the exams.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Low
Short Answer Questions (S.A.) (2 Marks)	Low
Long Answer Questions (L.A.) (3 Marks) (Diagrams)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Low

#Chapter 13: Organisms and Populations

Each category of question is covered in this chapter and the density of each category is almost the same, there are important diagrams in it and the 3 marks questions covers the most part of this chapter.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks) (diagrams)	Medium
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Medium

#Chapter 14: Ecosystem

However all the categories of the questions are there in this chapter, but the density of these questions is very low and you get the diagrams and also a little calculation part in the long answer type question category. So, this makes it an important question and you may get at least 1,2 questions from this chapter.

Types of Questions	Question Density
Very Short answer Questions (V.S.A.) (1 Marks)	Low
Short Answer Questions (S.A.) (2 Marks) (Diagrams)	Low
Long Answer Questions (L.A.) (3 Marks) (Diagrams and numericals)	Low
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Low

#Chapter 15: Biodiversity and Conservation

This chapter is not very important but contains questions in all the segments of the type of questions, a very little amount of diagram questions and the density of the questions is also very less.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks) (Diagrams)	Low
Short Answer Questions (S.A.) (2 Marks)	Low
Long Answer Questions (L.A.) (3 Marks)	Low
Very Long Answer Questions (V.L.A.) (5 Marks)	Low

#Chapter 16: Environmental Issues

The last chapter is quite important if the short and long answer questions are to be taken into consideration and there is a very less chance of very long answer questions to come in the examination. It contains diagrams and also graph questions, which could increase its chances of coming in the exam.

Types of Questions	Question Density
Very Short Answer Questions (V.S.A.) (1 Marks)	Medium
Short Answer Questions (S.A.) (2 Marks) (Graph)	Medium
Long Answer Questions (L.A.) (3 Marks)	Medium
Very Long Answer Questions (V.L.A.) (5 Marks) (Diagrams)	Low

Conclusion: The important questions and important notes PDF for class 12 biology provided in this article to you along with their solutions and you can use them whenever you are in doubt. The CBSE class 12th biology chapter wise questions provided in this article contains questions which have been added here after a lot of thinking and research and you will get an idea of the types of questions that you could be facing in your upcoming board exams.