Ecology II

3. A thin cylinder of meristematic tissue that can run the entire length of roots and stems
8. Are plant cells that often are elongated and occur in long strands or cylinders that provide support for the surrounding cells.
11. When the plant has a life span of two years.
13. A plant that lives anchored to an object or another plant.
14. A structure that contains the male or female reproductive structures of cycads and other gymnosperm plants.
15. Plant cells that lack cytoplasm and other living components when they mature, but their thick rigid cell walls remain.
17. Regions of rapidly dividing cells.
18. Structures that either store food or help absorb food for the tiny sporophyte.
20. sprouts from a seed,grows,produces new seeds, dies.
21. The structure fern spores form in.

1. Plants that lack specialized transport tissues.
2. Most flexible, thin-walled cells found throughout a plant.
4. A food-storage organ.
5. Specialized transport tissue.
6. A compact cluster of spore-bearing structures.
7. A plant that can live for several years.
9. Plants with vascular tissue.
10. Clusters of sporangia form this.
12. A plant structure that contains an embryo,contains nutrients for the embryo, and is covered with a protective coat.
16. Produces cells that develop tough cell walls.
19. Openings in the outer call layer of leaves and some stems.