Biology contributes half of NEET's total marks, which makes chapter prioritisation here more consequential than in any other subject. A handful of chapters — Genetics and Evolution, Human Physiology, Plant Physiology, Ecology, and Reproduction — have consistently carried the heaviest weightage across recent papers.
The mistake most students make is treating all NCERT lines as equally important. NEET Biology questions are frequently drawn from diagrams, tables and small footnotes within these high-weightage chapters, not just the bold definitions.
Build a revision cycle that returns to these chapters every two to three weeks throughout your preparation, rather than leaving them for a single pass near the exam — Biology's factual density punishes infrequent revision more than any other NEET subject.