Question
Distinguish between: Arithmetic growth and Geometric growth

Answer

Arithmetic growthGeometric growth
1. In arithmetic growth only one daughter cell continues to divide, while the other undergoes differentiation and maturation.1. In geometric growth both the daughter cells continue to divide and redivide again and again.
2. Rate of growth is constant.2 Rate growth is initially slow but later on rapid rate.
3. Linear curve is obtained.3. Exponential curve is obtained.
4. Mathematical expression is
Lt = Lo + rt whereLt = length of time ‘t’
Lo = Length at time zero
rt = growth rate, t = time of growth
4. Mathematical expression is
Wt = Woe rt where,
Wt = final size,
Wo = initial size, r = growth rate, t = time of growth E = base of natural logarithm
5. e.g. Elongation of root5. e.g. Divisions of zygote during embryo development.

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