

In the NCERT Biology book “Biology” (Class 11), Chapter — “Plant Growth and Development”, you explore how plants grow from seeds into mature organisms. You learn about growth phases, growth rates, and how cells differentiate to form specialized tissues.
You study plant growth regulators and understand how hormones like auxins, gibberellins, cytokinins, ethylene, and abscisic acid control various developmental processes. The chapter also explains photoperiodism and vernalisation in flowering plants.
This chapter builds your understanding of plant physiology and environmental responses, helping you connect hormonal regulation with real-life agricultural applications.