There are two types of fertile floral organs that produce spores, the stamens and the carpels. Stamens produce microspores that develop into pollen grains containing male gametophytes. A stamen consists of a stalk called the filament and a terminal sac, the anther, where pollen is produced.
a) At the tip of the carpel is the sticky stigma that receives pollen.
b) A style leads from the stigma to a structure at the base of the carpel, the ovary, which contains one or more ovules.
c) The sepals are modified leaves at the base of a flower that enclose the flower before it opens.
d) Interior to the sepals are the petals, which are brightly colored in most flowers and aid in attracting pollinators."
