Match the antibiotics in Group I with the microorganisms that produce them in Group II.
The correct matching of antibiotics in Group I with the microorganisms that produce them in Group II is as follows:
- Streptomycin (P): Produced by {Streptomyces griseus} (i).
- Bacitracin (Q): Produced by {Bacillus licheniformis} (ii).
- Amphotericin B (R): Produced by {Streptomyces nodosus} (iv).
- Chloramphenicol (S): Produced by {Streptomyces venezuelae} (iii).
Thus, the correct option is ( {(P)-(i), (Q)-(ii), (R)-(iv), (S)-(iii)} ), which corresponds to option (B).
Differentiate between spermatogenesis and oogenesis in humans on the basis of the following:
(a) When the process is initiated.