NEET Biology Repetition Trends (Past 10 years): CBSE

 

• Around 70–80% of questions are directly NCERT-based (even same wording).
• Certain topics repeat almost every 2–3 years, e.g.:
• Oxygen dissociation curve
• Lac operon
• Hardy–Weinberg principle
• Phylum features
• Plant hormones
• Immunity types
• Endocrine glands