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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development2 Marks
Question
Write few lines about growth curve?
✓

Answer

  1. It is the graphic representation of the total growth against time.
  2. The period of time in which growth takes place has been called grand period of growth by Sachs.
  3. The rate of growth is not uniform during grand period of growth.
  4. If total growth is plotted against time, a S-shaped or sigmoid curve is obtained. It consists of four parts, i.e., lag phase, exponential phase (log phase), phase of diminishing growth and stationary phase.

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