2O8 THE TEACHING BOTANIST 



If materials are available, here is the place for simple 

 physiologic-ecologic experiments upon such topics as the 

 sensitiveness of tendrils to contact, operation of Drosera 

 leaves, etc. 



IX. The Morphology and Ecology of Winter 



Buds 



In climates where a winter stops growth, the living 

 buds must be protected over that time. How is this 

 accomplished ? 



32. Study the Horse-chestnut twigs, particularly the 

 buds. Recall your knowledge of how the buds 

 of this tree develop in the spring. 



(1) What markings does the twig show? 



What is the meaning of each ? 



(2) What positions have the buds, and why ? 



(3) What sizes have the buds, and why ? 



(4) What shapes have the buds, and why ? 



(5) What colors have the buds, and why? 



(6) What is the exact structure of the buds ? 



(7) What is the morphological nature of 



each part ? 



(8) What is the function of each part ? 



(9) What structures have the buds in com- 



mon with unprotected summer buds, 

 and what accessory to their protection 

 over winter ? 



