CHAPTER III 



THE STRUCTURE OF PLANTS 



38. The parts of a plant. Laboratory Study No. 20. 



Materials: A well-developed bean plant or other seedling or a 

 weed, for each two pupils ; one or more plants with flowers and if 

 possible with fruits for demonstration. 



Nearly all the plants with which we are most familiar 

 consist of at least three kinds of 

 parts, namely, roots, stems, and leaves 

 (Fig. 4). 



1 . Name and describe as to color and 



form the parts of the plant that 

 grew beneath the ground. 



2. How does the stem differ from the 



root as to color and direction of 

 growth? What parts of the 

 plant above ground are attached 

 to the stem? 



3. How does the main part of the leaf 



differ in form from the root or 

 the stem? 



4. Make a drawing, natural size, of the 



plant you are studying, labeling 

 ground level, roots, stem, leaf. 



5. On the plants used for demonstra- 



tion, what parts besides those 

 named above do you find ? How 

 do the colors of these parts differ 

 from the color of the rest of the 

 plant? 

 26 



FIG. 4. Roots, stems, 

 leaves, flowers, and fruits 

 of a buttercup plant. 



