1. Ch. 24-1 Reproduction With Cones and Flowers Ch. 24 Reproduction of Seed Plants

2. Pollen Cone Cone in gymnosperms that produces male gametophytes in the form of pollen grains

3. Seed Cone Cone that produces female gametophytes

4. Ovule Structure in seed cones in which female gametophytes develop

5. Pollen Tube Structure grown y a pollen grain; contains two haploid sperm nuclei

6. Sepal Outermost circle of flower parts that encloses a bud before it opens and protects the flower while it is developing

7. Petal Brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower

8. Stamen Male part of the flower; made up of an anther and a filament

9. Filament Long thin structure that supports an anther

10. Anther Flower structure in which haploid male gametophytes are produced

11. Carpel Innermost part of a flower that produces the female gametophytes

12. Ovary In a flower structure that contains one or more ovules from which female gametophytes are produced

13. Style Narrow stalk of the carpel in a flower

14. Stigma Sticky portion at the top of the style where pollen grains frequently land

15. Embryo Sac Female gametophyte within the ovule of a flowering plant

16. Endosperm Food-rich tissue that nourishes a seedling as it grows

17. Double Fertilization Fertilization in angiosperms, in which two distinct fertilization events take place between the male and female gametophytes.

18. Key Concepts Reproduction in gymnosperms takes place in cones, which are produced by a mature sporophyte plant.

19. Key Concepts Flowers are reproductive organs that are composed of four kinds of specialized leaves: sepals, petals, stamens, and carples.

20. Key Concepts Reproduction in angiosperms takes place within the flower. Following pollination and fertilization, the seeds develop inside protective structures.

21. Key Concepts Most gymnosperms and some angiosperms are wind pollinated whereas most angiosperms pollinated by animals