Identify the correct statements with respect to microbes.A. "Toddy" t…

The correct answer is Option (3) → A, C, and D only

A. “Toddy” the traditional drink obtained by fermenting sap of Palm tree. — Correct. Toddy, a traditional drink of some parts of southern India, is made by fermenting the sap of palms with yeast.

B. Swiss cheese's large holes are due to activity of Saccharomyces cerevisiae. — Incorrect. The large holes come from the large amount of CO₂ made by the bacterium Propionibacterium sharmanii. Saccharomyces cerevisiae is baker's yeast, used for bread.

C. “Penicillin” was discovered by Alexander Fleming. — Correct. Fleming saw that the mould Penicillium notatum stopped the growth of Staphylococci; the chemical it made was named penicillin.

D. The Cyclosporin A, is produced by Trichoderma polysporum. — Correct. This fungus makes cyclosporin A, used to suppress immunity in organ-transplant patients.

NCERT Extract:
Microbes in Household Products – “… A number of traditional drinks and foods are also made by fermentation by the microbes. ‘Toddy’, a traditional drink of some parts of southern India is made by fermenting sap from palms.”
Antibiotics – “… Alexander Fleming while working on Staphylococci bacteria, once observed a mould growing in one of his unwashed culture plates around which Staphylococci could not grow. He found out that it was due to a chemical produced by the mould and he named it Penicillin after the mould Penicillium notatum.”
Chemicals, Enzymes and Other Bioactive Molecules – “Another bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum.”