CBSE Class 12 Biology Syllabus 2020-2021 - Detailed Syllabus - eSaral

eSaral Academic and Editorial Team
This year CBSE board has revised the class 12 Biology Syllabus. The New revised syllabus of biology contains chapters like Genetics and Evolution, Biotechnology and its Applications, and others. If you are looking for a Detailed CBSE Class 12 biology syllabus then read this post till the end.
By going through the syllabus students will get an idea about all the units and chapters of class 12 Biology.
CBSE Class 12 Biology Syllabus 2020-2021
Unit | Title | Marks |
VI | Reproduction | 14 |
VII | Genetics and Evolution | 18 |
VIII | Biology and Human Welfare | 14 |
IX | Biotechnology and its Applications | 12 |
X | Ecology and Environment | 12 |
| Total | 70 |
CBSE Class 12 Biology Practicals
Evaluation Scheme | Marks |
One Major Experiment | 5 |
One Minor Experiment | 4 |
Slide Preparation | 5 |
Spotting | 7 |
Practical Record + Viva Voce (Credit to the students’ work over the academic session may be given) | 4 |
Project Record + Viva Voce | 5 |
Total | 30 |
Class 12 Biology Chapters
- Reproduction in Organisms
- Sexual Reproduction in Flowering Plants
- Human Reproduction
- Reproductive Health
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Diseases
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology - Principles and Processes
- Biotechnology and its Application
- Organisms and Populations
- Ecosystem
- Biodiversity and its Conservation
- Environmental Issues
Class 12 Biology Syllabus includes lots of different Important topics of Biology. These topics will helps you to build a good foundation to learn Advanced Topics of Biology.
Also Read,
Best Books for NEET preparations
If you have any Confusion related to Class 12 Biology Syllabus then feel free to ask in the comments section down below.
To watch Free Learning Videos on physics by Saransh Gupta sir Install the eSaral App.

Team eSaral
eSaral Academic and Editorial Team
Team eSaral is the collective author profile for educational content created by eSaral’s teachers and academic contributors. The team draws on expertise from IIT graduates, doctors, experienced educators and subject specialists to develop resources for JEE, NEET and school students. Our articles aim to explain concepts clearly and help students study with confidence.
Related Posts

BITSAT 2027: Registration Date, Exam Date, Syllabus, Eligibility, Pattern & Fees
BITSAT 2027 exam dates, registration timeline, eligibility criteria, exam pattern, marking scheme, syllabus and fees in one page.

BITSAT Previous Year Question Paper PDF (2017-2026)
Download BITSAT previous year question papers PDF from 2017 to 2026,session-wise. Memory-based papers,exam pattern, paper analysis and how to practise

CBSE Class 10 Date Sheet 2027: Expected Exam Dates, Release Date, Admit Card & Result Timeline
CBSE Class 10 date sheet 2027 is awaited. See the expected exam dates, release window, how to download the PDF, admit card and result timelines.

NCERT Physics Class 10 Book PDF in Hindi 2026-27 – भौतिक विज्ञान के 4 अध्याय (Free Download)
NCERT Physics Class 10 book PDF in Hindi 2026-27: download all 4 chapters (अध्याय 9–12) free, with topics and important formulas.

NCERT Biology Class 9 Book Anveshan PDF in Hindi - जीव विज्ञान कक्षा 9 पुस्तक अन्वेषण PDF
Download NCERT Biology Class 9 book PDF in Hindi chapterwise for 2026-27: Cell, Tissues, Reproduction and Diversity. Free PDFs.
-1.webp?2026-10-02T10%3A55%3A05.572Z)
Essay On Artificial Intelligence in English (100,150, 200, 250, 300, 500 Words)
This is in contrast to the natural intelligence of humans. With Artificial Intelligence, machines can perform

Essay on 78th India Independence Day in English for Student (100, 150, 200, 250, 300, 500 Words)
Read the best essays on India's Independence Day in English. Short & long essays (100, 150, 200, 250, 300, 500 words) perfect for school exams
NCERT Class 11 English Snapshots book - Free PDF download- Esaral
Download NCERT Class 11 English Snapshots book PDF for free. Get all 8 chapters, chapter-wise. Start your prep today!
NCERT Class 10 biology book pdf - Free PDF Download - eSaral
NCERT Class 10 Biology book PDF 2026-27: all 5 chapters (Life Processes to Our Environment) in English & Hindi, with CBSE syllabus, marks & practical

Essay on Global Warming in English (100,150, 200, 250, 300, 500 Words)
Global warming means the Earth is getting hotter. This happens because of things like pollution from cars and factories.
