Firmly rooted in soil, over the course of their evolution plants have had to develop biological mechanisms for feeding and reproduction without moving, a characteristic that differentiates them from animals which on the contrary move around to procure food and to mate. While they are able to feed themselves independently by means of photosynthesis, in the case of reproduction, many plants need a go-between to transfer pollen for them, that is they need to be pollinated. Pollination is the process of transfer of pollen from the anthers, or male part of the flower, to the stigma, that is the female part, and it is a key passage that permits fecundation, production of seeds and, therefore, reproduction of plants.