Biology is one of the most important subjects in class 12. Students aspiring to make a career in medical field, pharmacy, dental, etc. should have scored good marks in their CBSE class 12 board examination. The CBSE Class 12 Biology marking scheme is designed by the Central Board of Secondary Education following certain guidelines. Marking scheme is the proper division of marks according to the Units. The CBSE Marking Scheme make students familiar with the marks weightage and questions paper design. Here we have also provided the evaluation scheme of Biology paper. Knowing this, students can easily plan their studies effectively and in organised manner.
The board has reduced the CBSE Class 12 Biology Syllabus by 30% for the 2020-21 academic session. The decision has been taken in regards to widespread COVID-19 pandemic. Now, the board has released the CBSE Class 12 Biology Sample Paper 2021 with marking scheme. The sample papers are based on the revised syllabus. Also, a few changes have been done in the exam pattern. So, students are advised to solve the Biology sample paper 2021 first and then go through the marking scheme. This will help in expressing the answers in a better way during the board exam.
CBSE Class 12th Marking Scheme: Biology
| 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 Question Paper Pattern 2021
The Biology paper will be of 70 Marks and 3 hours of time duration. Students can have a look at the paper pattern below.
| Section | No. of Questions | Marks per Question |
| A | 14 | 1 Mark Each |
| 2 | Case Based Questions | |
| B | 9 | 2 Marks Each |
| C | 5 | 3 Marks Each |
| D | 3 | 5 Marks Each |
CBSE Class 12 Biology Assessment Areas (Theory Paper)
The type of questions based on which the assessment will be done are mentioned below. Also, an internal choice of approximately 33% would be provided to the students in the exam.
- Very Small Answer Question including MCQs
- Assertion – Reasoning type questions
- Small Answer Question
- Large Answer Question-I
- Large Answer Question-II
- Source-based/ Case-based/ Passage-based/ Integrated assessment questions
| Competencies | |
| Demonstrate Knowledge and Understanding | 50% |
| Application of Knowledge / Concepts | 30% |
| Analyse, Evaluate and Create | 20% |
CBSE Class 12 Biology Practical Evaluation Scheme
| 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 |
| Investigatory Project and its Project Record + Viva Voce |
5 | |
| Total | 30 | |
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