The fruit that has the illustrated sections is a "hesperidium." Hesperidium is a type of fruit that is derived from a compound ovary with a leathery rind and is typically found in citrus fruits such as oranges, lemons, and limes. The fruit is divided into segments, each containing juice-filled sacs, called vesicles, that are surrounded by a tough, membranous tissue. The sections or vesicles are derived from the carpels of the ovary and are separated by thin walls. The term "hesperidium" comes from the Greek word for "golden apple," which was a reference to the fruit's yellowish color and round shape. The other options listed (capsule, drupe, and cypsela) do not have the same structural characteristics as a hesperidium.
