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Which of the following statements is/are...

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, biofertilisers are not available commercially in the markets for farmers.

A

(v) only

B

(iv) only

C

(iii) only

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
In our country, a number of biofertilisers are available commerically in the market and farmers use these regularly in their fields. This help to replenish soil nutrients and to reduce dependence on chemical fertilisers.
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