Biology is the most important subject of Class 12th as well as from the competitive exams perspective. It is the most important subject of medical entrance examinations and its syllabus is extremely vast.
To score maximum marks in the Class 12th Biology Board Exam, students must know about the blueprint, paper pattern and other essential information related to the board exam paper.
For the convenience of the students, some very important links are given at the end of the articles.
Weightage of Various Chapters according to the Previous Year Question Paper 2015 and Latest CBSE Blue Print is shown below:
| Unit-VI | Reproduction | 14 Marks |
| Chapter-1: Reproduction in Organisms | ||
| Chapter-2: Sexual Reproduction in Flowering Plants | ||
| Chapter-3: Human Reproduction | ||
| Chapter-4: Reproductive Health | ||
| Unit-VII | Genetics and Evolution | 18 Marks |
| Chapter-5: Principles of Inheritance and Variation | ||
| Chapter-6: Molecular Basis of Inheritance | ||
| Chapter-7: Evolution | ||
| Unit-VIII | Biology in Human Welfare | 14 Marks |
| Chapter-8: Human Health and Disease |
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| Chapter-9: Strategies for Enhancement in Food Production |
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| Chapter-10: Microbes in Human Welfare | ||
| Unit-IX | Biotechnology | 10 Marks |
| Chapter-11: Biotechnology : Principles and Processes |
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| Chapter-12: Biotechnology and its Applications |
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| Unit-X | Ecology | 14 Marks |
| Chapter-13: Organisms and Populations |
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| Chapter-14: Ecosystem | ||
| Chapter-15: Biodiversity and Conservation | ||
| Chapter-16: Environmental Issues | ||
| Total Marks | 70 |
Marks Distribution of the Previous Year Question Paper 2015 and the Sample Paper issued by CBSE for the year 2015-16 is as follows:
| Serial No. | Types of Questions | Number of Questions | Marks of Each Question | Total Marks |
| 1. | Very Short Answer Type Questions | 5 | 1 | 5 |
| 2. | Short Answer Type I Questions | 5 | 2 | 10 |
| 3. | Short Answer Type II Questions | 12 | 3 | 36 |
| 4. | Value Based Questions | 1 | 4 | 4 |
| 5. | Long Answer Type Questions | 3 | 5 | 5 |
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| Total = 26 |
| Total = 70 |
Choices in the question paper:
Previous year question paper and the paper issued by CBSE shows that there will be no overall choices in the coming board exam of CBSE Class 12th Biology.
However, an internal choice may be present for one question of 2 marks, one question of 3 marks and all the three questions of 5 marks.
Sample Paper for CBSE Class 12th Biology 2016 (Issued by CBSE)
Download CBSE Class 12th Biology Solved Practice Paper 2015
Download CBSE Class 12th Biology NCERT Solution
Download Solutions of Previous Year Papers of CBSE Class 12th Biology
Click Here to view Video Tutorials of various subjects of Class 12
Buy Guess Papers for CBSE Board Exams 2016 from Josh Shop
Other Useful Articles:
CBSE Class 12 Chemistry Board Examination Pattern: 2016
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