Exponential Plant Growth Formula — NEET Biology
📚 Practice ConceptThe exponential growth can be expressed as W1 = W0 ert W1 = final size (weight, height, number etc.) W0 = initial size at the beginning of the period r = growth rate t = time of growth e = base of natural logarithms Here, r is the relative growth rate and is also the measure of the ability of the plant to produce new plant material, referred to as efficiency index. Hence, the final size of W1 depends on the initial size, W0.
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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