Endosperm

• Title

  Endosperm

• Definition

  The energy-rich food supply of the seed that is formed by the fusion of the sperm and polar nuclei of the female gametophyte, initially surrounds the embryo, and is often apparent in the seed; some seeds, however, do not have any apparent endosperm.

• *For more educational content, please visit The Hand Lens and explore our herbarium collections and the stories they tell.