6 THE PLANT AS A WHOLE 



plant is so constituted as to withstand the diverse condi- 

 tions of the circumstances in which it is placed. The plant 

 contends for place in which to grow, and for air and light. 

 Its life is eventful. Every plant, therefore, has a history. 



Review. — Of what parts is a plant composed? What is the axis? 

 What parts are borne on the stem? On the root? On what part are the 

 mostly highly colored parts found? What direction does the root take? 

 The stem? How are plants anchored in the earth? In what order do 

 the different parts appear? What is meant by the life-history? What 

 are some of the stages or events in the life-history? At what point 

 does a generation begin? When end? By what means does the next 

 generation begin? What is an annual? Biennial? Perennial? Herb- 

 aceous perennial? Pseud-annual? Shrub? Bush? Tree? Give three 

 examples of each of these classes, not mentioning any given in the book. 

 What is a plur-annual? Why are no two parts or plants exactly 

 alike? What is the final effort of every plant? Why is the life of a plant- 

 eventful? 



Note. — The teacher may assign each pupil to one plant in the 

 school-yard, field, garden, or in a pot, and ask him to bring out the 

 points in the lesson. 



