Petri dish

A Petri dish is a shallow, cylindrical container made of glass or plastic, often used in laboratories for growing cultures of microorganisms, such as bacteria and fungi. It has a flat bottom and a lid, allowing scientists to observe the growth of these organisms in a controlled environment. Typically, the dish is filled with a nutrient-rich gel called agar, which provides the necessary food for the microorganisms. Petri dishes are essential tools in microbiology, helping researchers study the behavior, characteristics, and effects of various microbes in health, research, and development.