Typical growth curve in plants is:

Typical growth curve in plants is:
  1. Sigmoid
  2. Linear
  3. Stair-steps shaped
  4. Parabolic

Solution

The growth pattern of cells, 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 the lag period the growth is slow. It represents the formative or cell division phase.
(ii) Log phase: Also called as exponential phase. During this phase, growth is maximum & most rapid. It represents the cell elongation phase.
(iii) Steady or stationary phase: It represents the cell maturation phase.
Time taken in growth phases (mainly log phase) is called a grand period of growth.

Asked in: NEET 2015 (Phase 1)

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