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Biology · BIOLOGICAL CLASSIFICATION

हिन्दी

Heterotrophic bacteria are the most abundant in nature. Which of the following is NOT a beneficial welfare role performed by heterotrophic bacteria?

  1. A
    Making curd from milk
  2. B
    Production of antibiotics
  3. C
    Fixing nitrogen in roots of legume plants
  4. D
    Causing red tides in marine ecosystems
View Answer & Solution

Correct answer · Option D

Causing red tides in marine ecosystems

Explanation

Red tides are caused by rapid multiplication of dinoflagellates like *Gonyaulax*, not by heterotrophic bacteria.

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