Pollen, says The Encyclopædia Britannica, is “formed in the anther, or male apparatus, in seed - bearing plants and transported by various means (wind, water, insects, etc.) to the pistil, or female structure, where fertilization occurs. ”
„ The Encyclopædia Britannica ” ütleb, et „seemnetaimedel moodustub õietolm tolmukapeas ehk isassuguorganis ning kandub mitmel moel (tuule, vee, putukate jm abil) edasi emakasse ehk emassuguorganisse, kus toimub viljastamine ”.