1. 22-3 Seedless Vascular Plants Chapter 22 Plant Diversity

2. Vascular Tissue Type of plant tissue specialized to conduct water and nutrients throughout a plant.

3. Tracheid Hollow plant cell in xylem tissue with thick cell walls that resist pressure.

4. Xylem Vascular tissue that carries water upward from the roots to every part of a plant.

5. Phloem Vascular tissue responsible for the transport of nutrients and the carbohydrates produced by photosynthesis.

6. Lignin Substance in vascular plants that makes cell walls rigid.

7. Root Underground organ in plants that absorbs water and minerals.

8. Leaf Photosynthetic organ that contains one or more bundles of vascular tissue

9. Vein In plants, a cluster of vascular tissue in leaves; in animals, a blood vessel that returns blood to the heart

10. Stem Supporting structure that connects roots and leaves and carries water and nutrients between them

11. Rhizome Creeping or underground stem in ferns

12. Frond Large leaf of a fern

13. Sporangium Structure in ferns and some fungi that contains spores

14. Sorus Cluster of sporangia on the underside of a fern frond

15. Key Concept Both forms of vascular tissue—xylem and phloem—can move fluids through the plant body, even against the force of gravity.

16. Key Concept Seedless vascular plants include club mosses, horsetails, and ferns.

17. Key Concept Ferns and other vascular plants have a life cycle in which the diploid sporophyte is the dominant stage.