<prompt> Agent which on addition to a colony inhibits its growth and on removal the colony regrows is -BacteriostaticBactericidalAntibioticAntiseptic  <response>: They prevent the multiplication of bacteria but however they remain alive. Few antibiotics such as tetracycline,sulphomethoxazole REF:Textbook of microbiology, Ananthanarayan and Paniker. Page no.: 28 Tara textbook of pharmacology 