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NEETZoologyMicrobes in Human Welfare

Biofertiliser Type Role in Agriculture A. Bacteria 1. Nitrogen fixation in paddy fields B. Cyanobacteria 2. Phosphorus absorption C. Fungi 3. Adds organic matter to soil D. Blue-green algae 4. Fixes atmospheric nitrogen

Options

  1. AA-1; B-4; C-2; D-3
  2. BA-4; B-2; C-1; D-3
  3. CA-4; B-1; C-3; D-2
  4. DA-4; B-1; C-2; D-3

Correct answer

D. A-4; B-1; C-2; D-3

Step-by-step solution

Bacteria (like Rhizobium) are primarily involved in fixing atmospheric nitrogen. Cyanobacteria (like Anabaena) perform nitrogen fixation in paddy fields. Fungi (like Glomus) help in phosphorus absorption. Blue-green algae add organic matter to the soil, increasing its fertility.

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