Endosperm (Corn Seeds)
Endosperm is the angiosperm seed tissue that provides to the embryo. It is created with "the fusion of at least one nucleus in the embryo sac with a sperm nucleus from the pollen grain". Some seeds completely absorb the endosperm as they mature and others utilize it until germination as a food source. In corn, the outer layer consists of aleurone, which are thick-walled cells rich in protein.
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