Plant Structures

3. membrane of the central vacuole
5. region of continuous cell growth and cell division
7. outer layer of cork cells that protect woody plants from damage
9. travels the length of the leaf and branches to each side producing veins of vascular tissue
10. points of attachment for leaves, aerial roots, and flowers
13. elongated cells with unevenly thickened walls that provide structural support
14. stalk that extends from stem to the base of the leaf
15. cells have secondary cell walls that are thickened with deposits of lignin but many of them are dead at maturity
16. arrangement of leaves on a stem
18. transports water and nutrients in a plant while also providing support
19. the ground tissue towards the interior of the vascular tissue in a stem or root
20. membrane-bound organelles with their own DNA

1. make and store other plant pigments
2. waxy substance called that is present on the walls of the endodermal cells
4. control the opening and closing of stomata
6. the most common plant cells
8. hair-like structures on the epidermal surface
11. main root the grows vertically from which many smaller lateral roots arise
12. aerial stem modification that enables the plant to climb surfaces for support
17. waxy layer known that covers the leaves of all plant species to reduce the rate of water loss from the leaf surface