Typical growth curve in plants is:

Step-by-step solution

Growth pattern of cell, organisms is uniform under favourable conditions & a typical growth curve in plants is sigmoidal. Thus following phases of growth are recognized. (i) Lag phase: In lag period the growth is slow. It represents formative or cell division phase. (ii) Log phase: Also called as exponential phase. During this phase growth is maximum & most rapid. It represents cell elongation phase. (iii) Steady or stationary phase: It represents cell maturation phase. Time taken in growth phases (mainly log phase