LABORATORY PRACTICE 



XI. Explain how grafting and budding enable man to 

 propagate a particular form and why he resorts to this 

 method. 



XII. Examine the stem of the Prickly Pear Cactus 

 (Opuntia), and notice the joints of which it is made up. 

 Each joint may separate, or be separated, and grow into a 

 new plant. Make notes and sketches. 



XIII. Do you know of any plants other than those just 

 studied which multiply vegetatively ? If so, name and 

 describe them. 



XIV. Compare the different methods of vegetative repro- 

 duction which you have studied, stating particularly whether 

 root-, stem-, or leaf-structures were employed. 



