CBSE Class 12 Biology Syllabus, Sample Paper, and Marking Scheme Explained

CBSE Board Exams 2025: The Central Board of Secondary Education (CBSE) has clarified several important details regarding the Class 12 Biology exam for 2025. In this article, we will discuss the syllabus, sample paper format, marking scheme, and important updates about the CBSE Board Exams 2025.

CBSE Board Exams 2025

CBSE Class 12 Biology Exam Overview

The CBSE Class 12 Biology exam for 2025 will follow the existing guidelines. The theory paper will consist of 70 marks and must be completed within three hours. The exam will include various types of questions across five sections, including multiple-choice, short answer, and long answer questions.

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CBSE Class 12 Biology Exam Structure

According to the sample paper available on the official CBSE academic website, the Class 12 Biology exam is divided into five sections:

  • Section 1: 16 questions, each worth 1 mark.
  • Section 2: 5 questions, each worth 2 marks.
  • Section 3: 7 questions, each worth 3 marks.
  • Section 4: 2 case-based questions, each worth 4 marks.
  • Section 5: 3 questions, each worth 5 marks.

While there is no overall choice in the exam, internal choices are provided in some questions. Students will need to select one option from the alternatives provided. It is essential for students to include neat, well-labeled diagrams wherever required.

Important Updates for CBSE Class 12 Biology Students

  • No Reduction in Curriculum: The CBSE has refuted rumors suggesting a 15% reduction in the Class 10 and 12 curriculum. The Board clarified that no such changes have been made.
  • No Open Book Exams: Reports about open book exams for select subjects in 2025 have also been denied by the CBSE. The Board emphasized that any policy changes would be officially communicated through the CBSE website or circulars.
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Students are advised to rely solely on official CBSE sources for the most accurate and up-to-date information.

CBSE Board Exams 2025 Datesheet and Schedule

The CBSE Datesheet 2025 for both Class 10 and 12 exams will be released in December 2024. The exams are scheduled to begin on February 15, 2025. Students are encouraged to regularly check the CBSE website (cbse.gov.in) for updates and access the official datesheet once it is published.

Attendance Requirement for CBSE Board Exams 2025

To be eligible for the 2025 CBSE Board Exams, students must have a minimum of 75% attendance. It is crucial for students to ensure that they meet this requirement to avoid disqualification from the exams.

CBSE Class 12 Biology Marking Scheme

The marking scheme for the Class 12 Biology exam is as follows:

  • Total Marks: 70
  • Duration: 3 hours
  • Question Format: The exam will consist of a mix of objective, short-answer, and long-answer questions, with the inclusion of case-based questions.
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Students must familiarize themselves with the exam format to better understand the structure of the questions and plan their preparation accordingly.

Conclusion: Preparing for CBSE Class 12 Biology Exam 2025

In conclusion, students should thoroughly review the Class 12 Biology syllabus, practice with sample papers, and focus on time management during the exam. Understanding the marking scheme and the type of questions that are typically asked will be instrumental in securing good marks. Keep checking the official CBSE website for any updates, including the release of the datesheet and any additional announcements.


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