<prompt> Mesophilic organisms are those that grow best at temperature of --20o C to -7o C-7o C to 20oC25o C to 40o C55o C to 80o C  <response>: Bacteria which grow best at temperatures 25o C to 40o C are Mesophilic organisms Examples: Pseudomonas aeroginosa,gonococus Ref: Ananthanarayan panikers Textbook of Microbiology 9th edition pg no 25 