Q28 / 226 · NTA Abhyas (NEET) 2020 · Zoology · Microbes in Human Welfare

Some blue-green algae can be used as biofertilizer as they are

  • A
    Photosynthetic
  • B
    Surrounded by mucilage
  • C
    Growing everywhere
  • Correct answer
    D
    Capable of fixing nitrogen

Solution

Blue-green algae (BGA) are photoautotrophic, prokaryotic algae. They are free-living organisms and also known as cyanobacteria. They are fixers of the atmospheric nitrogen and hence recommended as a bio-fertilizer.

Hence, the correct answer is option: 'D'.

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