Tree Stud v. 771 



6. What is the food of the tree and where does it come from? 



7. How does the tree breathe? 



8. What is meant by transpiration ? 



9. Describe the process of formnig the annual rings. 



10. Describe how a wound heals over ; describe how a knot is made. 



II. What is the difference between heart wood and sap wood? 



12. What are the various necessities for tree growth? 



13. What are the tree's requirements for moisture? What are its 

 requirements for light? 



14. What do we mean by the terms tolerant and intolerant when 

 applied to trees? 



15. Describe the reproduction of trees by seed and by sprouts. 



