Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.

Growth
It is an irreversible, permanent increase in the size, mass, volume, or dry weight of a cell, organ, or organism, driven by anabolic and metabolic activities

Differentiation
It is the process by which undifferentiated meristematic cells change structurally, biochemically, and functionally, becoming specialized to perform specific roles

Development
It encompasses the sequence of changes an organism undergoes in its lifecycle—growth, differentiation, maturation, and senescence

Dedifferentiation
It is the process wherein mature, specialized plant cells regain the ability to divide, reverting to a meristematic state under certain conditions

Redifferentiation
It follows dedifferentiation, where reverted meristematic cells lose division ability again and mature to perform specific functions

Determinate growth
It refers to growth that continues only until a genetically predetermined size is reached—seen in organs like leaves and flowers—after which growth stops

Meristem
A region in plants composed of undifferentiated, totipotent, continuously dividing cells; includes apical, intercalary, and lateral meristems, and is essential for primary and secondary growth

Growth rate
The quantitative measure of growth per unit time—may be expressed as absolute or relative growth per day, week, etc.