Across
- 5. a mark on the seed coat showing where the ovule was attached to the ovary
- 7. an opening in the seed coat where the sperm entered the ovule prior to fertilization and through which water first enters the seed
- 8. converts carbohydrates in sugars
- 11. the beginning of plant growth during which the embryo inside the seed changes into a developing seedling
- 14. the part of the seed that develops into the first or primary root
- 15. Pollination of a flower on another plant
- 17. the ability of seeds to produce normal seedlings under less-than-optimal or adverse growing conditions
- 19. the portion of the embryonic shoot below the cotyledon(s) and above the radicle
- 21. Pollination of a flower on the same plant
- 22. an immature plant in an arrested state of development
- 23. seed dormancy mechanism whereby a seed must go through a period of cold temperatures before it will germinate
Down
- 1. the ability of seeds to germinate under optimal conditions
- 2. the fusion of male and female gametes to form a diploid cell called a zygote (when the pollen enters the ovary)
- 3. a reproductive plant body that consists of a seed coat, an embryo, and stored food
- 4. signal the production of amylase and protease
- 6. the part of the seed that develops into the shoot. (includes the epicotyl & hypocotyl)
- 9. the first part of the new plant that emerges from the seed
- 10. is a protective outer covering of the seed
- 12. tissue that surrounds the embryo and provides nutrition in the form of starch and, to some extent, oils and proteins
- 13. the portion of the embryonic shoot above the cotyledon(s) that in most plants develops into the plant leaves
- 16. the intake of water by a seed
- 18. the transfer of pollen from the male to the female part of a plant
- 20. converts proteins into amino acids
- 21. a seed dormancy mechanism that involves the physical breaking down of the seed coat