Seed Plants: Cones, Flowers, and Fruits

Seed plants are land plants that make seeds, use pollen, and have reduced gametophytes. This group includes gymnosperms and angiosperms. Gymnosperms include cycads, Ginkgo biloba, gnetophytes, and conifers.

Gymnosperms usually form cones. Pollen cones contain the male gametophytes. Ovulate cones ...

Seed plants are the most diverse and ecologically dominant group of plants on Earth, with nearly 400,000 species. Scientists divide them into two major groups: gymnosperms and angiosperms.

Gymnosperms are nonflowering plants and include conifers, cycads, and ginkgoes. Angiosperms are flowering plants and make up more than 90 percent of all...