What is a drupe?

A drupe is defined as a type of fruit that typically features a single seed encased within a hard, stony covering, known as the endocarp, surrounded by a soft, fleshy outer layer referred to as the mesocarp and exocarp. This structure is commonly observed in fruits like cherries, peaches, and olives. The unique anatomy of drupes allows for the protection and eventual dispersal of the seed, contributing to the reproductive success of the plant.

In contrast, other options describe different botanical concepts. For instance, tree bark refers to the outer protective layer of a tree's trunk and branches, which is not related to the fruit structure. Likewise, a seed without an outer covering does not correspond to a drupe, as drupes are characterized precisely by their protective layers. Lastly, leaves are vital components of a plant but do not have any similarities with the definition of drupes regarding fruit structure. Understanding the characteristics of drupes helps clarify their role in plant reproduction and the diversity of fruit types in botany.