Petri dish
A Petri dish is a shallow, flat, cylindrical container made of glass or plastic, commonly used in laboratories for growing cultures of microorganisms. It typically has a lid that covers the dish, helping to prevent contamination. The dish is filled with a nutrient-rich gel called agar, which provides the necessary environment for bacteria, fungi, and other small organisms to thrive.
Petri dishes are essential tools in microbiology and are often used in experiments to observe the growth patterns of different species. They can also be used for testing the effectiveness of antibiotics and other substances on microbial growth, making them valuable in medical and scientific research.