henoe are easll-'- blown over. Roots also are i.-,ontractile as in 

 ■bixlbs. Climbing roots. 



3. Mechanical support. 



Banya,n — Indian corn — prop roots. 



4. Storage. 



Tcirnip — Beet. 



5. Leaf work. 



As chlorophyll develops in roots of water plants as in water 

 plants and epiph^^tes. 



C. Aeration. 



Cypress swamps. 



