The correct answer is pollen.Concept:Flower: It is the reproductive part of a plant.It has 4 whorls, namely sepals, petals, stamens, and pistil.Explanation: Stamens: It is the male reproductive part of a plant.It has two components, an anther, and a filament.The filament is the long stalk on the end of which lies the anther.The anther is a bilobed structure that carries microsporangia.This microsporangium produces microspores or pollen grains.Pollen grains are the male gametophytes each of which carries two male gametes.Additional InformationPistil: It is the female reproductive part of the flower. It consists of stigma, style, and ovary.