Mesophilic organisms are those that grow best at temperature of -: (A) -20o C to -7o C, (B) -7o C to +20oC, (C) 25o C to 40o C, (D) 55o C to 80o C
Answer is C. Bacteria which grow best at temperatures 25o C to 40o C are Mesophilic organisms Examples: Pseudomonas aeroginosa,gonococus Ref: Ananthanarayan & paniker's Textbook of Microbiology 9th edition pg no 25