Biology / Bio 2199 · Atom · ~20 seconds

Double Fertilization Mechanism

Video not yet published
to the StudyWalks catalog

State

An angiosperm's pollen tube delivers two sperm cells: one fertilizes the egg, forming the embryo; the other fuses with two nuclei, forming endosperm.

Show

Endosperm becomes the corn kernel's starchy tissue, a nutrient store from this second fertilization, distinct from the embryo.

Watch for

Double fertilization is unique to angiosperms — no gymnosperm lineage performs this two-sperm event.