1. Tardigrade
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  3. Biology
  4. 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. On plotting the length of the organ against time, a linear curve is obtained, as seen in the graph. Mathematically, it is expressed as - <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/cfc50153c8b16cd4121f82f5d430caef-.png />

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Q. 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. On plotting the length of the organ against time, a linear curve is obtained, as seen in the graph. Mathematically, it is expressed as -
image

Plant Growth and Development

Solution:

Correct answer is (a) $L_t = L_0+ rt (L_t$ = Length at time't' $L_0$ = length at time 'zero’ $r$ = growth rate/ elongation per unit time.