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Term Definition
Tetrad A group of four pollen grains. Pollen tetrads of Allantoma integrifolia. Photo by Y.-Y. Huang.
Tetrad Referring to pollen grains that remain in groups of four after meiois; in most species of flowering plants the tetrads separate into four monads immediately after meiosis. Fertile and fodder pollen of Couroupita guianensis. Photo by L. E. Gámez Alvarez.