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Natural Resources — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceNatural Resources1 Mark
MCQ
Signs of eutrophication of water bodies include:
  • A
    Reduced oxygen demand.
  • B
    Rapid decomposition of organic matter.
  • ✓
    Algal bloom.
  • D
    Fluorosis.
✓

Answer

Correct option: C.
Algal bloom.
Eutrophication is a phenomenon that occurs in water bodies. Excess of nutrients result in algal blooms which stops the penetration of light into the water body and the aquatic plants are thus unable to perfrom photosynthesis.

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