Typical growth curve in plants is- (2015 RS) A. Linear B. Stair-steps shaped C. Parabolic D. Sigmoid
Option D. The rate of growth is not the same always, it increases and decreases. If we plot the graph against the time it will be S-shape curve which is called a sigmoid growth curve. It has three phases : Lag phase ( initial phase ) Log phase ( exponential phase ) stationary phase ( steady phase ) So, the correct answer is ' sigmoid'.
