Lesson 1 Xylem and phloem

Objectives:

Core

1. State the functions of xylem and phloem: (a) xylem – transport of water and mineral ions, and support (b) phloem – transport of sucrose and amino acids
2. Identify in diagrams and images the position of xylem and phloem as seen in sections of roots, stems, and leaves of non-woody dicotyledonous plants

Supplement

1. Relate the structure of xylem vessels to their function, limited to (a) thick walls with lignin (details of lignification are not required) (b) no cell contents (c) cells joined end to end with no cross walls to form a long continuous tube