CBSE 12th Biology Deleted Syllabus 2026 Check Chapter Wise Syllabus
Table of Contents
- What is the Precise CBSE 12th Biology Deleted Syllabus 2026?
- How to get the CBSE 12th Biology Syllabus 2026 PDF?
- What is the Exact CBSE 12th Biology Question Paper Pattern 2026?
- What is the CBSE 12th Biology Topics Weightage 2026?
- What are the Benefits of the CBSE 12th Biology Deleted Syllabus 2026?
The Central Board of Secondary Education has revised the 12th class Biology syllabus and it is a big relief for the students. The decision to opt for the CBSE 12th Biology Deleted Syllabus 2026 will lessen the workload of students. Furthermore, it will make the curriculum more balanced. Thus, if you are preparing for the CBSE 12th Exam 2026, then make sure to follow the reorganized syllabus only.
The CBSE 12th Deleted Syllabus 2026 will certainly help you to achieve outstanding results. A lot of topics, subtopics, and sections have been removed from the CBSE 12th Class Biology. Chapters like Reproduction in Organisms, Strategies for Enhancement in Food Production, and Environmental Issues have been completely eradicated from the syllabus. The major portion has been reduced in chapters like Ecosystem and Organisms & Populations. Even the practical part of the subject has been simplified to make the syllabus manageable and relevant in the present times. Without a doubt, the CBSE 12th Biology Deleted Syllabus 2026 will reduce your academic tension to a great extent.
This write-up provides information about the CBSE 12th Biology Deleted Syllabus 2026 in a step-by-step way. So, if you are curious to know about the modified syllabus then don’t skip the upcoming details.
Also Read: CBSE Class 12 Syllabus 2026
What is the Precise CBSE 12th Biology Deleted Syllabus 2026?
Once you understand the CBSE 12th Biology Deleted Syllabus 2026 then it will become very easy to draft a proper preparation strategy. Here is an idea about the chapter-wise eradicated topics in Biology –
|
Chapters |
Deleted Topics |
|
Chapter 1 - Reproduction in Organisms |
Complete chapter removed |
|
Chapter 9 - Strategies for Enhancement in Food Production |
Complete chapter removed |
|
Chapter 16 - Environmental Issues |
Complete chapter removed |
|
Chapter 14 - Ecosystem |
Ecological Succession Nutrient Cycling Succession of Plants Ecosystem – Carbon Cycle Ecosystem – Phosphorus Cycle Ecosystem Services |
|
Chapter 13 - Organisms and Populations |
Organism and its Environment Major Abiotic Factors Responses to Abiotic Factors Adaptations |
|
List of Experiments |
Collect and study soil from at least 2 different sites and study them for texture, moisture content, pH, and water-holding capacity. Correlate with the kinds of plants found in them.
Collect water from 2 different water bodies & study them for pH, clarity, and presence of any living organism.
Study the presence of suspended particulate matter in air (at 2 widely different sites).
Study the effect of different temperatures and 3 different pHs on the activity of salivary amylase on starch. |
|
List of Practicals (study/observation of the following spotting) |
2 plants and 2 animals (models/virtual images) were found in xeric conditions. Comment upon their morphological adaptations.
2 plants and 2 animals (models/virtual images) were found in aquatic conditions. Comment upon their morphological adaptations. |
Also Read: CBSE 12th Class Admit Card
How to get the CBSE 12th Biology Syllabus 2026 PDF?
Whenever you are practicing for the subject of Biology then make sure that you have an updated syllabus for reference. If you follow the outdated syllabus then it will only lead to confusion and a waste of time. The table below shares the updated PDF for the CBSE 12th Biology syllabus –
|
CBSE 12th Biology Syllabus 2026 – Download PDF |
Also Read: CBSE Class 12th Previous Year Question Papers
What is the Exact CBSE 12th Biology Question Paper Pattern 2026?
The CBSE 12th Biology Theory question paper will be of 70 marks and 30 marks will be reserved for the practical and experiments. Hence, the total weightage of the CBSE 12th Biology exam will be 100 marks. For the theory paper, you will be given the initial 15 minutes to read the paper and in the next 3 hours, you will have to solve the questions. There will be 5 sections from A to E and in totality; you will have to answer 33 questions. These questions will be a mix of MCQs, very short, short, case-based, and long answer-type questions. The table underneath will help you to comprehend the CBSE 12th Biology question paper pattern in the right way -
|
Section |
Number of Questions |
Marks Allotted |
|
A |
16 questions of 1 mark each
(MCQs) |
16 x 1 = 16 |
|
B |
5 questions of 2 marks each
(very short answer type questions) |
5 x 2 = 10 |
|
C |
7 questions of 3 marks each
(short answer type questions) |
7 x 3 = 21 |
|
D |
2 questions of 4 marks each
(case-based questions) |
2 x 4 = 8 |
|
E |
3 questions of 5 marks each
(long answer type questions) |
3 x 5 = 15 |
|
Total |
33 Questions |
70 Marks |
Also Read: CBSE Class 12th Sample Papers
What is the CBSE 12th Biology Topics Weightage 2026?
It is important to analyze the topic-wise weightage for CBSE 12th Biology. Once you understand the weightage, it will be easy to allocate the correct amount of time to each topic. Given below is an idea about the CBSE 12th Biology topic-wise weightage -
|
Topics |
Weightage |
|
Reproduction – sexual reproduction in flowering plants, human reproduction, reproductive health, etc. |
16% |
|
Genetics and Evolution – molecular basis of inheritance and evolution, principles of inheritance, variation, etc. |
20% |
|
Biology and Human Welfare – human health and diseases, microbes in human welfare, sewage treatment, energy generation, antibiotics, microbes as bio-control agents, etc. |
12% |
|
Biotechnology and Its Applications – principles and processes related to biotechnology, applications of biotechnology, etc. |
12% |
|
Ecology and Environment – ecosystem, biodiversity and its conversation, etc. |
10% |
|
Practical and Experiments |
30% |
You must understand that these percentages are near-about values based on the findings of the latest CBSE 12th Biology syllabus pattern. To obtain the correct and most up-to-date knowledge about the weightage or syllabus, you must visit the designated website of the board at cbseacademic.nic.in.
Also Read: CBSE Class 12th Exam Preparation Tips
What are the Benefits of the CBSE 12th Biology Deleted Syllabus 2026?
Here is an idea about the multiple benefits of the CBSE 12th Biology Deleted Syllabus 2026 –
-
Your stress level will go down and you can create a rational study plan with the help of the reduced syllabus.
-
More attention can be paid to the core topics in Biology.
-
You will get some extra time to prepare for the competitive exams like NEET.
-
While solving the previous years’ CBSE 12th Biology papers, you can skip the questions from the deleted portion.
-
Your conceptual understanding will improve
-
It will prove to be a good opportunity to score better marks in Biology.
For more knowledgeable updates about the CBSE 12th Exam, follow Getmyuni!
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