RBSE 12th Biology Exam Pattern 2026 – Check Marking Scheme 

Roumik Roy

Updated on - Aug 27, 2025

The RBSE 12th Biology Exam Pattern 2026 comes with a very balanced layout. The knowledge of the exam pattern will help in clearing many of your doubts. You will get to know the exact style of the question paper. It will also specify the marking pattern and weightage parameters. So, if you have just begun preparing for the RBSE 12th Exam 2026, then pursue only the new exam pattern. 

The RBSE 12th Exam Pattern 2026 comes with an easy-to-know arrangement. The whole evaluation of the Biology exam is one hundred marks. The theory exam’s weightage is seventy marks. Out of these seventy marks, the sessional paper is for 14 marks, and 56 marks are for the main theory exam. Thirty marks are for the practical assessment. You will find four main sections in the theory exam. The question paper will have a mix of Fill-in-the-blanks, MCQs, very short, short, long, and essay types of questions. This exam has nil negative marking. So, solve all the questions with a calm mind. 

This article covers every piece of information about the RBSE 12th Biology Exam Pattern 2026. So, attentively go through the upcoming paragraphs and get rid of all your doubts related to the exam pattern. 

RBSE 12th Biology Exam Pattern 2026 – Section Wise Classification 

The RBSE 12th Biology Exam Pattern is very simple to comprehend. The total assessment of the Biology paper is one hundred marks. The theory exam is for seventy marks. Out of this valuation of seventy marks, fourteen marks are for the sessional paper, and fifty-six marks are for the main theory exam. Thirty marks are for the practical assessment. 

For the main theory exam of 56 marks, you will get 3 hours and 15 minutes to solve all the questions. There will be four sections (A to D) in the theory exam. Section A will have a mix of 34 MCQs, fill-in-the-blanks, and very short types of questions (half-mark and one-mark questions). Section B will have twelve short questions of 1½ marks each. Section C will contain three long questions of 3 marks each. In section D, you will have to answer two essay-type questions of 4 marks each. The table below will help you know the exact RBSE 12th Biology question paper pattern. 

Section A

Type of questions 

Number of questions 

Marks allotted 

1

MCQs

Question number 1 with 16 subparts –½ mark each 

16 x ½ = 8

2

Fill-in-the-blanks  

Question number 2 with 10 subparts –½ mark each 

10 x ½ = 5

3

Very short 

Question number 3 with 8 subparts – 1 mark each 

8 x 1 = 8 

Section B

Type of questions 

Number of questions 

Marks allotted 

1

Short 

Question numbers 4 to 15 – 1½ mark each 

12 x 1½ = 18

Section C

Type of questions 

Number of questions 

Marks allotted 

1

Long 

Question numbers 16 to 18 -3 marks each (These questions have an internal choice)

3 x 3 = 9 

Section D

Type of questions 

Number of questions 

Marks allotted 

1

Essay type 

Question numbers 19 and 20 – 4 marks each (These questions have an internal choice)

2 x 4 = 8 

Total 

 

20 questions 

56 marks 

Also Read: RBSE 12th Biology Syllabus 2026 

RBSE 12th Biology Marking Scheme 2026 

The table below provides the RBSE 12th Biology marking scheme in a chapter-wise arrangement. These easy-to-interpret details will end your confusion related to the marking scheme. Have a look - 

Sections 

Type of questions (Approximate assessment)

Number of questions (Approximate assessment)

Marks allotted (Approximate assessment)

Sexual-reproduction in case of flowering plants 

MCQs, fill-in-the-blanks, very short, and short

4

5

Human reproduction  

Very short/ short, and long

4

4

Reproductive health aspects  

Very short and short 

3

2

Inheritance principles & variation

MCQs, fill-in-the-blanks, very short, short, and long

5

5

Molecular-basis of inheritance 

MCQs, fill-in-the-blanks, very short, short, long, and essay type

6

6

Evolution 

Very short and short 

2

3

Human health & diseases

Short/long and essay type 

6

6

Role of microbes in human welfare 

MCQs, fill-in-the-blanks, very short, and short

4

5

Principles of biotechnology & biotechnology-based processes 

MCQs, fill-in-the-blanks, short, and very short 

3

4

Applications related to biotechnology 

MCQs, fill-in-the-blanks, short, and very short 

3

4

Organisms & population 

MCQs, fill-in-the-blanks, short, and very short 

3

4

Ecosystems 

MCQs, fill-in-the-blanks, very short, and short 

5

5

Biodiversity & its conservation 

MCQs, fill-in-the-blanks, and very short 

3

3

Total of main theory exam 

 

51 questions 

56 marks 

Sessional theory exam

 

 

14 marks 

Practical assessment 

 

 

30 marks 

RBSE 12th Biology Exam Total Valuation 

 

 

100 marks 

Also Read: RBSE 12th Biology Deleted Syllabus 2026 

RBSE 12th Biology Unit Wise Marking Scheme 2026 

If you want to identify the RBSE 12th Biology unit-wise weightage, then the table below will provide you with all the details that you are looking for. Here is the simple classification - 

Topics/Units

Weightage% (Approximately)

Marks allotted (Approximately)

Sexual-reproduction in case of flowering plants 

9%

5

Human reproduction  

7%

4

Reproductive health aspects  

4%

2

Inheritance principles & variation

9%

5

Molecular-basis of inheritance 

11%

6

Evolution 

5%

3

Human health & diseases

11%

6

Role of microbes in human welfare 

9%

5

Principles of biotechnology & biotechnology-based processes 

7%

4

Applications related to biotechnology 

7%

4

Organisms & population 

7%

4

Ecosystems 

9%

5

Biodiversity & its conservation 

5%

3

Total 

100%

56 marks 

The estimates that you see above are the possible values based on the most recent RBSE 12th Biology Exam Pattern. If you want to get the official exam pattern from the board’s online portal, then you can visit the website, rajeduboard.rajasthan.gov.in. 

Also Read: RBSE 12th Admit Card 2026 

How to Use RBSE 12th Biology Exam Pattern 2026?

You can use the RBSE 12th Biology Exam Pattern 2026 in the following ways –

  • Always devote some time to analyzing the RBSE 12th Biology Exam Pattern. It will help you to know the high-weightage chapters. This will further help in creating a goal-oriented timetable.

  • It is always seen that if a student knows the exam pattern beforehand, then it helps in reducing academic anxiety. So, if you are facing exam-related stress, then knowing the exam pattern will help amazingly. 

  • With the knowledge of the exam pattern, you can know your weak points in the subject of Biology. Hence, it provides scope for improvement. 

  • For better revision, excellent time management, and focused practice, you must know the exam pattern. 

  • Exam pattern’s knowledge will help you to cover the full syllabus in a short span of time. 

Also Read: RBSE 12th Sample Papers 2026 

For more beneficial updates related to the RBSE 12th Exam, follow Getmyuni!

FAQs on RBSE 12th RBSE 12th Biology Exam Pattern

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