Tree increases eecn year m 

 height and spread of branches 

 by adding on new growth ot 

 twig 



CROWN 



the prTnci 



ihe 



under, surface,; 



leaves 



*t Leaves pVepa re 

 the food obtained 

 from airand scu.1 

 and give off 

 mo' sfure t>y 

 trarapi ration 



Light ana;heat- 

 necessary for 

 chemical changes 



Heartwood inactive) 

 gives 



Sapwood carries sap 

 from root to leaves 



The breathing pores of 

 the enti re tree,- on> leaves 

 twigs, branches.trunkand 

 roots take in oxygen 

 Flooding, poisonous gases 

 or smoke may kill a tree 



Cambium tmicroscopic) 

 builds the cells 



inner barK carries 

 prepared food from 

 leaves to cambium 



**e 



Root tips orroT*airiTXe 

 up water containing sn>e 

 quantity Q"f minerals t&^ 

 solution./ 



lU.S.DEPT OF AGRICULTURE I _ .A 



FOREST SERVICE. Taproofr/f^ 



1 I 



HOW THE TREE GROWS 



The b<-iOS. -oo tips ana cambium layer- are 1 ^ grow-i-ng 

 Vyater corvra">>g a srnal* quantiTy of minerals n soJxition is absorbed by the 

 /'pots carmeo upTnrougri -rne sapwooo to The leaves and there cora*bTrted with 

 The afTo make food Thi food ia cameKJ by t : he i M\n^C> t *C'*J to ail / 

 of The Tree even oown TO the root- Tips 



