THE STRUGGLE TO LIVE 5 



The plant meets its conditions by succumbing to them 

 (that is, by dying), or by adapting itself to them. 



The tree meets the cold by ceasing its active growth, 

 hardening its tissues, dropping its leaves. Many her- 

 baceous or soft-stemmed plants meet the cold by dying 

 to the ground and withdrawing all life into the root parts. 

 Some plants meet the cold by dying outright and provid- 

 ing abundance of seeds to perpetuate the kind next season. 



FIG. 4. THE REACH FOR LIGHT OF A TREE ON THE EDGE OF A WOOD. 



Plants adapt themselves to light by growing toward it 

 (Fig. 4); or by hanging their leaves in such position that 

 they catch the light ; or, in less sunny places, by expand- 

 ing their leaf surface, or by greatly lengthening their 

 stems so as to overtop their fellows, as do trees and vines." 



The adaptations of plants will afford a fertile field of 

 study as we proceed. 



