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Term Definition
Pollen drop A small drop of liquid similar to nectar that accumulates on the apex of the ovule of gymnosperms. The wind-dispersed pollen of gymnosperms lands on the pollination drop and when it dries the pollen is carried into the ovule where it eventually fertilizes the egg to produce an embryo. See A in the attached figure. Gymnosperm variation. Photos by R. R. Kowal and S. A. Mori.