Which of the following statements is/are incorrect? (i) Cyanobacteria are autotrophic…
Biology · Class 12 · CBSE — Microbes in Human Welfare
Which of the following statements is/are incorrect?
(i) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial habitats.
(ii) Anabaena, Nostoc and Oscillatoria are photosynthetic N2 - fixing cyanobacteria.
(iii) Tolypothrix (BGA) can increase rice production by about 20%.
(iv) BGA add organic matter to the soil and increase its fertility.
(v) In our country, biofertilizers are not available commercially in the markets for farmers.
(i) Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial habitats.
(ii) Anabaena, Nostoc and Oscillatoria are photosynthetic N2 - fixing cyanobacteria.
(iii) Tolypothrix (BGA) can increase rice production by about 20%.
(iv) BGA add organic matter to the soil and increase its fertility.
(v) In our country, biofertilizers are not available commercially in the markets for farmers.
- (v) Only
- (iv) Only
- (iii) Only
- None of these
Answer
(A) (v) Only
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