Rajeev Jeev Vigyan Textbook for Class 12 is a comprehensive guide to life sciences aligned with the latest 2026-27 curriculum standards. This edition covers essential topics in biology, physiology, and ecology with clear explanations, detailed diagrams, and structured learning modules designed for board exam preparation. Ideal for students seeking in-depth conceptual understanding and practical knowledge. Features chapter-wise summaries, key definitions, and exam-focused content to support effective revision and confident performance in Class 12 assessments.