13. PLANT GROWTH AND DEVELOPMENT
The chapter focuses on plant growth and development, highlighting the processes of growth, differentiation, and their interrelation. It discusses the phases of growth, the role of meristems, and the impact of environmental factors and plant growth regulators (PGRs) on plant physiology. The chapter emphasizes the significance of both intrinsic and extrinsic factors in achieving optimal growth outcomes in plants.
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What we have learnt
- Growth is an irreversible increase in size and can be measured in various parameters.
- Plants have distinct phases of growth: meristematic, elongation, and maturation.
- Plant growth regulators play a crucial role in regulating growth and development processes.
Key Concepts
- -- Growth
- An irreversible permanent increase in size of an organ or an individual cell.
- -- Differentiation
- The process by which cells mature to perform specific functions.
- -- Dedifferentiation
- The process where mature cells regain the ability to divide.
- -- Redifferentiation
- The process by which dedifferentiated cells mature again into specialized cells.
- -- Meristem
- Regions of plant tissues that are capable of cell division and contribute to growth.
- -- Plant Growth Regulators (PGRs)
- Chemical substances that regulate physiological processes in plants.
Additional Learning Materials
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