1. 22-4 Seed Plants Chapter 22 Plant Diversity

2. Gymnosperm Seed plant that bears its seeds directly on the surfaces of cones

3. Angiosperm Flowering plant; bears its seeds within a layer of tissue that protects the seed

4. Cone In gymnosperms, a seed-bearing structure

5. Flower Seed-bearing structure of an angiosperm

6. Pollen Grain Male gametophyte in seed plants

7. Pollination Transfer of pollen from the male reproductive structure to the female reproductive structure

8. Seed Embryo of a living plant that is encased in a protective covering and surrounded by a food supply

9. Embryo Organism in its early stage of development

10. Seed Coat Structure that surrounds and protects a plant embryo and keeps it from drying out

11. Key Concept Adaptations that allow seed plants to reproduce without water include flowers or cones, the transfer of sperm by pollination, and the protection of embryos in seeds.

12. Key Concept Gymnosperms include gnetophytes, cycads, ginkgoes, and conifers.