Q. The smallest free-living organism is
A) Virus
B) Mycoplasma
C) Diatom
D) Cyanobacterium
Explanation
Mycoplasmas are the smallest known anaerobic, Gram negative prokaryotes without a cell wall. These are also known as Pleuro Pneumonia Like Organisms (PPLOs). These cause pleuropneumonia in humans and cattles.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.