Firstly u must revise in these last month
and for bio ncert is almost enough but refer other materials for other information

What to Study in the Last Month
- Focus on revising key concepts and topics in biology that are likely to be tested in the upcoming exams.
- Prioritize topics that you find challenging or need more practice with.
- Make a study schedule to ensure you cover all necessary material before the exam.

Is NCERT Enough for Biology?
- NCERT textbooks are the primary source for CBSE board exams and contain all the essential information needed to excel in biology.
- However, it is beneficial to supplement your studies with additional resources like sample papers, previous year question papers, and reference books for a more comprehensive understanding.
- Practice solving questions from NCERT textbooks and other sources to test your knowledge and improve your problem-solving skills.

Explanation
In the last month before your exams, it is crucial to prioritize your study efforts and focus on revising key concepts in biology. While NCERT textbooks provide a solid foundation for the subject, it is recommended to supplement your studies with additional resources to enhance your understanding and prepare effectively for the exams. Practice solving questions from various sources, including NCERT textbooks, sample papers, and previous year question papers, to test your knowledge and improve your problem-solving skills. By following a structured study schedule and utilizing a combination of resources, you can ensure thorough preparation and boost your confidence for the upcoming biology exam.