Serrated margins refer to the jagged or saw-like edges found on certain leaves, petals, or other plant structures. These edges can help with water drainage and may deter herbivores from eating the plant due to their sharp appearance. In botany, serrated margins are often observed in various species, including those in the Acer (maple) and Quercus (oak) genera. The presence of serrated edges can be an important characteristic for identifying and classifying plants in the field.