Draw diagrams to represent observations of the animal and plant cells examined above

State the main features used to place all organisms into one of the five kingdoms: Animal, Plant, Fungus, Prokaryote, Protocitist

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