Embryo Sac (IMAGE)

University of California - Davis

Embryo Sac

Caption

A gradient (red) in the concentration of the plant hormone auxin, determines that only one of the eight undifferentiated nuclei in a plant's embryo sac will become an egg. (In this image, a large vacuole dominates the central section of the embryo sac.)

Credit

Monica Alandete-Saez/UC Davis

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