The Central Board of Secondary Education (CBSE) will hold the Class 12 Biology exam on March 27, 2026 . This exam is for students in the science stream who chose Biology. It will be a pen-and-paper test. The practical exams for Biology will take place earlier, from January 1 to 14, 2026 , in students' own schools. The main CBSE Class 12 board exams for all subjects are set to happen between February 17 and April 9, 2026 .
To help students prepare, CBSE has shared important tips. These tips aim to help students understand the subject deeply, write answers clearly, and manage their time well during the exam.
CBSE Class 12 Biology Exam 2026: Key Dates
Here are the important dates for the upcoming Biology exam:
| Event | Date |
| CBSE Class 12 Practical Exams (Biology) | January 1 to 14, 2026 |
| CBSE Class 12 Board Exams (All Subjects) | February 17 to April 9, 2026 |
| CBSE Class 12 Biology Exam | March 27, 2026 |
How to Prepare for CBSE Class 12 Biology Exam 2026
Biology is a subject where simply memorizing facts is not enough. Students need to understand the main ideas clearly. They also need to write answers in a way that shows this understanding and use their exam time wisely. Here are simple tips to help students score well in the CBSE Class 12 Biology exam:
Understand Your Syllabus
- Students must know the full CBSE Class 12 Biology syllabus for 2026.
- This helps them know all the topics, units, and chapters they need to cover.
- The complete syllabus can be downloaded as a PDF from the official CBSE website.
Master NCERT Textbooks
- The NCERT books are the most important resource for the Biology exam.
- Do not just read and memorize. Try to understand each concept properly.
- After reading a section, close the book and try to explain the idea in your own words.
- Highlight important words and terms to remember them better.
Practice Diagrams and Labeling
- Diagrams are a big part of the Biology exam.
- Focus on key diagrams such as the human heart, the structure of a nephron (kidney unit), or the parts of a flower.
- Practice drawing these diagrams step-by-step. Also, learn to label all their parts correctly and explain what each part does.
Make Short Notes
- While studying, write down important points.
- These notes will help you remember key information for a long time.
- Refer to these notes just before the exam for quick revision.
Connect to Real Life
- To understand Biology better, link topics to everyday examples.
- For instance, when studying immunity, think about how vaccines protect against diseases like COVID-19.
- When learning about the nitrogen cycle, remember how farmers use fertilizers to help crops grow. This helps build a deeper understanding.
Write Clear Answers
- Well-written answers help students get higher marks.
- Write answers point-by-point. Use sub-headings, flowcharts, and bullet points to make your answers clear and easy to read.
- If a question asks about Mendelian inheritance, start with a short introduction. Then, draw a Punnett square to explain, and finally, sum up your findings.
- Use keywords from the NCERT books, such as 'dominant traits' and 'recessive traits', to show you understand the topic fully.
Practice Regularly
- Regular practice of concepts and diagrams is key to scoring well.
- Use memory tricks, also called mnemonics, to remember information easily. For example, to remember the taxonomic hierarchy (Kingdom, Phylum, Class, Order, Family, Genus, Species), you can use the phrase ‘King Philip Came Over For Good Soup.’
- Create flashcards for new or difficult words and terms. This makes revision easier and more effective.
