Question

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 $N_2$ - 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, fertilizers are not available commercially in the markets for farmers.

• A. (v) Only
• B. (iv) Only
• C. (iii) Only
• D. None of these

Answer 1

The correct option is A (v) Only

Biofertilizers are available commercially in our country for farmers.

So, the correct option is '(v) Only'