Across
- 2. the central part of an ovule, containing the embryo sac.
- 7. They are gymnosperms, cone-bearing seed plants.
- 9. a leaf that bears sporangia.
- 11. the central part of an ovule, containing the embryo sac.
- 12. division of plants, grouped within the gymnosperms,
Down
- 1. a sticky flammable organic substance, insoluble in water, exuded by some trees and other plants
- 3. a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
- 4. seed plants with a long fossil history that were formerly more abundant and more diverse than they are today.
- 5. having the male and female reproductive organs in separate individuals.
- 6. a genus of highly unusual non-flowering plants.
- 8. grain- have a tough coat that has a form characteristic of the pollen-producing plant and which can still be recognized in some archaeological deposits.
- 9. Coat- the protective outer coat of a seed.
- 10. a plant closed in an outer shell.