the female reproductive structure of a flower. The pollen grain then germinates into a tube that guides the male reproductive cells to the depths of the ovary, picking up signals along the way that ...

Stamens produce fine grains, called pollenCarpels produce ovules. Carpel The female part of the flower (consists of an ovary, a stigma, and usually a style.) Stigma The top of the female part of ...

Unlike ferns, which release spores into the environment, seed plants hold their female reproductive structures -- ovules -- on the plant itself. Capturing airborne pollen was crucial for their ...