Seedless Vascular Plants Vocabulary

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Across
  1. 3. Small lateral outgrowth of stem, produced by primitive vascular plants, thought to be first stage in microphyll evolution.
  2. 5. Small leaves that contain a single strand of vascular tissue.
  3. 9. Production of two types of spores from two different kinds of sporangia.
  4. 11. Latter-like pattern of lignin in tracheary elements to allow for outward expansion.
  5. 12. Plant tissue that conducts nutrients, mainly sucrose.
  6. 15. A modified leaf that bears microsporangia.
  7. 17. Photosynthetic, principal lateral appendages of the stem.
  8. 18. Plant tissue that conducts water and minerals, fortified by lignin.
  9. 19. A modified leaf that bears sporangia.
Down
  1. 1. A reproductive structure consisting of non-photosynthetic sporophylls.
  2. 2. Ring pattern of lignin in tracheary elements to allow for elongation.
  3. 4. Sporangia arise from only one epidermal cell and have a specialized explosive spore dispersal.
  4. 6. Thickened fleshy underground stem where energy is stored.
  5. 7. A modified leaf that bears megasporangia.
  6. 8. Sporangia arise from several epidermal cells and have no specialized dispersal of spores.
  7. 10. A pine cone would be an example
  8. 13. Large leaves that contain multiple strands of vascular tissue.
  9. 14. Production of one type of spore from one kind of sporangium.
  10. 16. Spiraling pattern of lignin in tracheary elements to allow for elongation.