Practicing CBSE Class 12 Biology Paper 5 Previous Year Question Paper 2025 allows students to experience real exam conditions before the final board exam. Solving this paper under timed conditions enhances speed, reduces exam stress, and strengthens problem-solving ability. It also helps revise important definitions, diagrams, and biological processes efficiently. Understanding the CBSE marking scheme through previous year papers enables students to structure answers properly. Overall, Biology Paper 5 serves as an effective revision tool that improves preparation and boosts performance in the Class 12 board examination.