______ is the antibiotic effective against tuberculosis.
A vaccine meant for protection against tuberculosis:
A particular species of which one of the following, is the source bacterium of the antibiotic, discovered next to penicillin, for the treatment of tuberculosis ?
(a) Escherichia (b) Streptomyces (c) Rhizobium (d) Nitrobacter
Consider the given assertion and reason, choose the right option. Assertion [A] : Antibiotics are produced by bacteria and fungi.
Reason [R] : Antibiotics are not effective against viruses.