Definition of Growth in Living Organisms — NEET Biology
📚 Practice ConceptGrowth is regarded as one of the most fundamental and conspicuous characteristics of a living being. What is growth? Growth can be defined as an irreversible permanent increase in size of an organ or its parts or even of an individual cell. Generally, growth is accompanied by metabolic processes (both anabolic and catabolic), that occur at the expense of energy. Therefore, for example, expansion of a leaf is growth. How would you describe the swelling of piece of wood when placed in water?
Which of the following statements concerning growth rates and patterns in plants are NOT correct? S1: In arithmetic growth, both daughter cells formed after a mitotic cell division retain the ability to divide. S2: Geometric growth is characterized by an initial lag phase, followed by an exponential rate of increase (log phase). S3: A linear curve is obtained when plotting the parameter of growth against time in systems undergoing geometric growth. S4: The growth rate 'r' in the exponential growth equation (W1 = W0ert) is referred to as the relative growth rate and efficiency index. S5: A typical sigmoid growth curve is characteristic of cells grown in a natural environment and of many higher plants. S6: Growth, whether arithmetic or geometric, is ultimately a reversible permanent increase in size of an organ or its parts.
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