NEET Previous-Year & Exam-Pattern Set
From the previous-year papers, this chapter is a dependable scorer that repeatedly tests: growth rates (arithmetic vs geometric, and simple Lt = L0 + rt calculations); differentiation, dedifferentiation and totipotency; plasticity/heterophylly; and - most heavily - the plant growth regulators: their discovery, their signature effects and their practical applications (2,4-D as a herbicide, gibberellin on sugarcane, cytokinin and nutrient mobilisation, the gaseous ethylene), plus photoperiodism (the site of perception) and vernalisation.
Below are genuine NEET previous-year questions from this chapter, followed by exam-pattern practice in the same styles, each with a full worked solution.