The Pericarp is the
botanical term for the tissue surrounding a
seed that develops from the ovary wall of the flower. Generally the pericarp is the fruit making body. This includes many types of fruits including
nuts, but does not include a few fruits like
figs. In some cases, such as the
acorn, the pericarp becomes dry and hard, forming a shell around the seed. In fleshy fruits the pericarp is typically made up of three distinct layers: the exocarp (the outside or the peel), the mesocarp (the middle layer), and the endocarp (the inner layer).
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