In drupe fruit (stone fruit), pericarp is divided into three layers, i.e., Epicarp, mesocarp and endocarp. Endocarp is stony in these fruits. These fruits generally contain one seed rarely two (Zizyphus) or these (Borassus).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.