Anatomy & Classification of trees

1. a series of sieve tube elements placed end to end to form a continuous tube.
4. a group of cells that have similar structure and that function together as a unit.
5. of the cell types found in xylem, the water conducting tissue of plants.
13. Has the appearance of rounded divisions among the margins of the leaf
14. the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
15. the scientific study of trees
17. A leaf which is divided into smaller leaflets, those leaflets arranged on each side of the leaf's central stalk

2. the outer layer of tissue in a plant, except where it is replaced by periderm.
3. A leaf that has leaflets attached to side branches arranged along a central leafstalk
6. consists of undifferentiated cells capable of cell division
7. the outermost layer of plants, which covers leaves, fruits, flowers, and non-woody stems of higher plants.
8. study of the structure of a organism
9. Leaflets attached to the end of a leafstalk
10. transports water and nutrients from the plant
11. a type of water-conducting cell in the xylem which lacks perforations in the cell wall.
12. the way in which a living organism or bodily part functions.
16. Material that remains after cells mature and die