Why do you label the bottom of the pertidish?

Labeling the bottom of a petri dish is essential for proper identification and organization of samples. It ensures that researchers can easily track the contents, including the type of organism or experiment being conducted. This practice also helps prevent cross-contamination and mix-ups, which can lead to inaccurate results. Additionally, labeling on the bottom avoids interference with viewing the samples through the lid, maintaining clarity during observations.