In arithmetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures. The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate. Look at On plotting the length of the organ against time, a linear curve is obtained. Mathematically, it is expressed as
Observe the four graphs (a–d) given below. Which one correctly represents growth following mitotic cell division exemplified by a root elongating at a constant rate ?
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