Answer: When pollen moves from the Anthers to the Stigma, fertilization can occur.
Explanation:
Anthers are part of the male reproductive organ of the flower and there we can find the pollen grains, where the reproductive cells of the plant are located. Stigma is the part of the organ female reproductive system that receives the pollen grains.
Thus, pollination is the process of transporting anther pollen to the stigma of flowers, this is the first step in the reproduction of flowering plants. When the pollen grains reach the stigma and subsequently reach the ovum we have this part developed into seeds, while that the ovary will turn into fruit. The pollinating agents are those that "carries" the grain of pollen through the environment until it reaches the stigma of the flower. We can cite as examples, the anemophilous pollination, made by the wind; hydrophilic pollination, made by water and the zoophile pollination, made by animals.
