AP BIOLOGY

Detailed explanation-1: -Key Points. Male cones give rise to microspores, which produce pollen grains, while female cones give rise to megaspores, which produce ovules.

Detailed explanation-2: -Male pine cones produce pollen, which is like a powder. The male cones release their pollen, which is carried around the air by blowing wind, and hopefully to another female pine cone on a different pine tree. If the pollen reaches a female pine cone, this process is called pollination.

Detailed explanation-3: -The female cone (megastrobilus, seed cone, or ovulate cone) contains ovules which, when fertilized by pollen, become seeds.

Detailed explanation-4: -Pollen grains are carried by the wind and reach female cones. What are the reproductive structures of angiosperms? Flowers are reproductive organs that are composed of four kinds of specialized leaves: sepals, petals, stamens, and carpels.

Detailed explanation-5: -There are male and female cones on each evergreen. Seed bearing cones are female, while the pollen filled cones are male. Both sexes of cones grow on the same tree, but the male cones typically grow on lower branches relying on the wind to blow pollen up to the female cones.