plants

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Across
  1. 6. solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers
  2. 8. having the male and female reproductive organs in separate individuals.
  3. 9. a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
  4. 10. coat the protective outer coat of a seed.
  5. 11. grain each of the microscopic particles, typically single cells, of which pollen is composed
  6. 12. seed plants with a very long fossil history that were formerly more abundant and more diverse than they are today
Down
  1. 1. a genus of highly unusual non-flowering plants
  2. 2. division of plants, grouped within the gymnosperms
  3. 3. division of vascular land plants
  4. 4. the central part of an ovule, containing the embryo sac
  5. 5. a tough outer protective layer, especially that of an animal or plant.
  6. 7. A sporophyll is a leaf that bears sporangia