CELLS. 



4. Elodea. Examine a leaf under both powers. Notice how the leaf is divided 

 into separate compartments called " cells." Draw what you see. Notice the movement 

 of the protoplasm which is best seen in the cells at the tip of the leaf. 



5. Diatoms. Examine a drop of water containing diatoms which are plants composed 

 of one cell only. Draw examples of them under the high power. 



