<prompt> Colistin is obtained from ?BacteriaFungiActinmycetesHerbs  <response>: Ans. is a i.e., Bacteria Amongst the given options no drugs is obtained from fungus. Antibiotics are obtained from - 1. Fungi - Penicilllin, Cephalosporin, Griseofulvin. 2.Bacteria - Polymyxin B, Colistin, Bacitracin, Tyrothricin, aztreonam. 3. Actinomycetes - Aminoglycosides, Tetracyclines, Chloramphenicol, macrolides, Polyenes. 