Question:
Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.
Answer:
• Growth is an irreversible permanent increase in size of an organ or its parts or even of an individual cell.
• Differentiation is the process in which the cells derived from root apical and shoot-apical meristems and cambium differentiate and mature to perform specific functions.
• Differentiation is the process in which the cells derived from root apical and shoot-apical meristems and cambium differentiate and mature to perform specific functions.
• Development is a term that includes all changes that an organism goes through during its life cycle from germination of the seed to senescence.
• Dedifferentiation is the process in which permanent plant cells regain the power to divide under certain conditions.
• Redifferentiation is the process in which de-differentiated cells become mature again and lose their capacity to divide.
• Determinate growth is the type of growth in which growth stops after a certain phase.
• Meristem are the specialised regions in the plants where active cell divisions take place.
• Growth rate is the increased growth per unit time.
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