19. (a) What are the green parts developing from the 



buds? 

 {i>) How many pairs are there ? 



(c) How are the pairs arranged with reference to 



each other? 

 {d) How are the leaves folded away in the bud ? 

 (e) How are the leaflets folded ? 



20. (a) Describe the thick body found in the midst of 



the leaves in some buds. 



(d) What does it develop into ? 



{c) At what time of the year are the flowers of the 

 horse-chestnut usually fully developed ? 



21. (a) What position on the bud-stem does the flower 



cluster always occupy ? 

 (d) Do all the buds contain flowers ? 

 (c) What is the usual position of those buds 



containing flowers ? 



22. What is the difference in appearance of the buds 

 containing leaves and flowers and the buds containing 

 only leaves ? 



23. {a) Observe carefully and describe any changes 



in the axis on which the young leaves 

 are produced as the bud contents develop. 

 ((5) Hence, infer what relation a bud bears to a 

 stem. 



24. What becomes of the bud-scales as their contents 

 develop ? 



E. Scale-Markings. 



25. (a) Observe carefully the points from which scales 



have fallen, and describe the effects of their 

 fall. 



