Plant Growth and Development

How plants grow, differentiate and develop - a high-yield NEET chapter (2-4 questions/year) rich in named discoveries and applications. It covers growth (its definition, the phases and the arithmetic vs geometric growth rates and curves, and the conditions for growth); differentiation, dedifferentiation and redifferentiation; development, plasticity and the sequence of events; the five plant growth regulators (auxins, gibberellins, cytokinins, ethylene and abscisic acid - their discovery, physiological effects and practical applications); and the environmental control of flowering by photoperiodism and vernalisation. Six graded practice sets - two Easy, two Medium, one Hard and one NEET previous-year set - each opening with comprehensive NCERT-anchored notes covering 100% of the current syllabus, followed by single-correct MCQs with full explanations.