Which of the following statements are incorrect for microbe used in household products?

(i) The dough, which is used for making foods such as dosa and idli is also fermented by bacteria.

(ii) The puffed-up appearance of dough of dosa and idli is due to the production of CO 2 gas by using yeast (Saccharomyces cerevisiae).

(iii) Dough, which is used for making bread, is fermented using baker’s yeast (Saccharomyces cerevisiae).

(iv) ‘Toddy’, a traditional drink of some parts of Southern India is made by fermenting pulp of mango.

(v) Microbes are also used to ferment fish, soyabean and bamboo shoots to make foods.

(vi) The large holes in ‘Swiss cheese’ are due to production of a large amount of CO 2 by a bacterium named Propionibacterium sharmanii.

(vii) The ‘Roquefort cheese’ is ripened by growing specific bacteria on then, which gives them a particular flavor.