REFERENCES 
273 
QUESTIONS 
What is the stem? What is its use to the plant? What positions 
do stems take ? How long do they live ? Name and describe the pecul¬ 
iar stems. What are vascular bundles? How are they arranged in 
a monocotyledonous stem? in a dicotyledonous stem? What is their 
work? What is meant by definite annual growth? indefinite annual 
growth? What are annual rings? How are they formed? 
REFERENCES 
• 
Bergen, Foundations of Botany, pages 62-129. 
Bergen and Caldwell, Practical Botany, pages 11-13, 39-103. 
jCoulter, Plant Life and Plant Uses, pages 49 and 143-193. 
Gibson, Sharp Eyes, pages 48-51, 240-243. 
Snyder, General Science, page 188. 
