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STD 11 - 13. Plant growth and development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 13. Plant growth and development1 Mark
MCQ
Typical growth curve in plants is
  • A
    stair­steps shaped
  • B
    parabolic
  • ✓
    sigmoid
  • D
    linear.
✓

Answer

Correct option: C.
sigmoid
c
(c) : Geometric growth cannot be sustained for long in natural condition. Limited nutrient availability slows down the growth. It leads to a stationary phase or even a decline. Plotting the growth against time, gives a typical sigmoid or S­curve. Sigmoid curve of growth is typical of most organisms in their natural environment including plants.An idealised sigmoid growth curve is drawn below:

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