Full potential of penicillin as an effective antibiotic was established by :-

Match the column-I with column-II and select correct option.

Which of the following option is not correct.

After Rene descartes, natural sciences were mainly directed towards:

Assertion (A): Rhizobium forms symbiotic association with roots of non-leguminous plants like Alnus.

Assertion (A): Methanogens grow aerobically on cellulosic material to produce methane. Reason (R): M