LABORATORY PRACTICE 



5. Notice also the relation, as regards position, existing be- 



tween each tendril and the adjacent leaf. 



6. Make a sketch to show these points. 



7. Is the tendril a stem, root, or leaf ? 



8. Write down your answer, and give your reasons for it. 



9. How, then, does the Squash raise itself into the air and 



sustain itself there ? 



VI. Examine a Pea Plant and notice the tendrils. 



1. How do they differ from those of the Squash? 



2. Are they stems, roots, or leaves? 



3. Sketch the tendril of the Pea and the adjacent structures 



to show these parts. 



VII. Examine tendrils in as many different plants as you 

 can, and compare them with those you have studied. 



VIII. Examine a plant of the Jasmine-flowered Night- 

 shade (Solanum Jasminoides) and notice : 



1. That its tip twines about the support. In what direction ? 



2. That the petioles of the leaves clasp the stem tightly, 



and become much thickened. 



3. Make a sketch to show this. 



IX. Examine a plant of Clematis or Virgin's Bower and 

 notice : 



1. The twining habit and its direction'. 



2. The compound leaves, clasping the support both by 



means of the main petiole and by means of the 

 petioles of the leaflets. 



3. Make sketches to show this. 



X. Examine the English Ivy and notice : 

 i. That the stem does not twine. 



