Biological culture dishes are commonly used basic instruments in biology teaching and experiments, mainly for microbial culture, cell culture, or plant tissue culture. Culture dishes are usually made of heat-resistant glass or plastic, circular in shape, flat at the bottom, and slightly upturned at the edges for ease of operation and to prevent contamination. In biology teaching, students can use petri dishes for various experiments, such as observing the growth of bacteria and fungi, conducting antibiotic sensitivity tests, and cultivating plant cells. The use of culture dishes can help students understand the growth conditions, nutritional requirements, metabolic products, etc. of microorganisms and cells, thereby deepening their understanding of basic biological knowledge.