Which of these cannot act as a biofertiliser?

Brown and Red Algae

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Blue-green algae

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Glomus

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Rhizobium

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Solution

The correct option is A Brown and Red Algae
Biofertilisers are microorganisms which can fix nitrogen and hence enrich the soil with utilizable nitrogen-containing compounds. Blue-green algae or Cyanobacteria, Glomus (a genus of fungi) and Rhizobium can fix nitrogen, but brown and red algae cannot.

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Which of these cannot act as a biofertiliser?

The correct option is A Brown and Red AlgaeBiofertilisers are microorganisms which can fix nitrogen and hence enrich the soil with utilizable nitrogen-containing compounds. Blue-green algae or Cyanobacteria, Glomus (a genus of fungi) and Rhizobium can fix nitrogen, but brown and red algae cannot.

The correct option is A Brown and Red Algae
Biofertilisers are microorganisms which can fix nitrogen and hence enrich the soil with utilizable nitrogen-containing compounds. Blue-green algae or Cyanobacteria, Glomus (a genus of fungi) and Rhizobium can fix nitrogen, but brown and red algae cannot.