Class 12 Biology NCERT Solutions: NCERT (National Council of Educational and Research Training) publishes and distributes textbooks for classes 1 to 12 (all major subjects). The content of NCERT textbooks is written by experienced teachers and professors with deep knowledge and understanding of the subject. The information given in NCERT textbooks is authentic, and students can completely rely on these books for understanding the concepts as well as for the preparation of the exams. CBSE schools follow NCERT textbooks, as these are recommended by the board. Sometimes, questions given in NCERT textbooks are directly asked in CBSE board exams. Due to these reasons, students preparing for the 12th Biology Board Exam in 2025-26 must study the NCERT textbook and NCERT Solutions for Class 12 Biology.
Class 12 Biology: Subject-wise Marks Distribution
Students should check the below table to know the Subject Wise marks distribution of CBSE 2025-26 academic year subject Biology Class 12:
| Sl. No. | Subject | Marks |
| 1. | Reproduction | 16 |
| 2. | Genetics and Evolution | 20 |
| 3. | Biology and Human Welfare | 12 |
| 4. | Biotechnology and its Applications | 12 |
| 5. | Ecology and Environment | 10 |
| Total | 70 |
NCERT Solutions for Class 12 Biology All Chapters
Click on the links given below to get NCERT Solutions for Class 12 Biology all Chapter PDFs for download.
| Old Chapter Number | New Chapter Number | Chapter Name |
| 1 | Deleted | Reproduction in organisms (Deleted from revised NCERT) |
| 2 | 1 | |
| 3 | 2 | |
| 4 | 3 | |
| 5 | 4 | |
| 6 | 5 | |
| 7 | 6 | |
| 8 | 7 | |
| 9 | Deleted | Strategies for Enhancement in Food Production (Deleted from revised NCERT) |
| 10 | 8 | |
| 11 | 9 | |
| 12 | 10 | |
| 13 | 11 | |
| 14 | 12 | |
| 15 | 13 | |
| 16 | Deleted | Environmental Issues (Deleted from revised NCERT) |
You Must Check:
- CBSE Class 12 Biology Syllabus 2025
- CBSE Class 12 Biology Practical Syllabus 2025
- CBSE Class 12 Date Sheet 2025
- Class 10 and 12 practical exam dates
- CBSE Class 12 Biology Competency Based Questions 2025
- NCERT Class 12 Biology Lab Manual PDF 2025
- CBSE Class 12 Most Repeated Questions
Importance of NCERT Class 12 Biology Solutions
NCERT is a reliable and one of most accurate source of knowledge. CBSE refer to the NCERT textbooks to make questions and design the marking scheme. The NCERT questions are also directly picked in entrance examinations and thus solving them is highly suggested. Therefore, you must check these NCERT solutions if preparing for the competetive examinations like NEET.
Also Read:
Related | CBSE Class 12 Biology Exam Pattern and Topic Wise Weightage 2025
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