Asunflower is an angiosperm, and a gingko is a gymnosperm. which best describes the life cycles of sunflowers and gingkoes?

Both the sunflower and gingko have seeds.

 Both the sunflower and gingko have cones.

The life cycle of sunflowers involves double fertilization; the life cycle of ginkgoes involves single fertilization.

Explanation:

An angiosperm refers to plants which are flower bearing and usually bisexual. The angiosperms are a large group and include grasses, herbs, shrubs and trees. A gymnosperm refers to plants whose seeds are borne on the female cones and seeds are not enclosed in a fruit wall. The gymnosperms comprise of coniferales, cycadales and ginkgoales. Both the sunflower (angiosperm) and ginkgo (gymnosperm) are seed-producing plants. However, the seeds of a sunflower are enclosed by a flower or a fruit wall, while in case of Ginkgoales they are not. Also, sunflowers include double fertilization, while the Ginkgoales involve only a single fertilization.

it restores trees to areas where they once grew.