WOOD'S CLASS-BOOK OF BOTANY iii 



CHAPTER III. 



103. WHAT is the earliest stage of the plant ? 



104. In growing, whither does the radicle direct itself? 

 What is the tendency of the plumule ? 



105. Explain the structure of the bud. How does it grow? 

 Why is the original bud called also terminal ? 



106. What sort of axis does the terminal bud alone develop ? 



107. What other buds are also found ? Whence arise the branches? 



110. Whence does the flower originate ? 



111. What then is the nature of the flower? 



112. From what organ does the fruit originate? 



113. Explain these views by the figure of the paeony and its parts. 



CHAPTER IV. 



OF what does this chapter treat ? 

 114. Define the root. How distinguish root from stem? 



116. Please state the two-fold office of the root. 



117. What is the leading propensity of the root? 

 What are the only proper appendages of the root? 



What end or purpose is answered by the multiplication of these ex- 

 tremities ? 



118. What is the part designated by the term collum f 

 What are the spongioles, or spongelets ? 



119. What are the fibrilUe? Their office and use ? 



120. Why should a tree or shrub be transplanted in Spring ? 



121. Name the two definite modes of root-development. 



122. Define accurately the axial mode. The inaxial. 

 Give instances of them both. 



124. Name the four varieties of the axial, or tap-root. 



125. Define the ramous tap-root. The tuberous. 



127. Define the fusiform tap-root. The conical. Napiform. 

 How are all these thickened roots reservoirs ? 



130. Name the six forms of inaxial roots. 



131. Describe, with examples, the fibrous root. 



132. Describe the nbro-tuberous root. Moniliform. Tubercular. 



133. What is the thickening matter in all these cases? 



134. What roots are said to be adventitious ? 



135. What roots are said to be cirrhous? 



136. What curious style of root has the screw-pine ? 



137. Describe the adventitious roots of the banyan. 



138. Describe the curious habit of the mangrove tree. 



139. How may the growth of adventitious roots be favored? 



140. Mention a method of raising dwarf trees. 



1 41. Axial and inaxial which requires deep tillaere ? 



If two crops are sown together what should they be ? 



143. What is the nature of those plants called Epiphytes? 



144. What are Parasites? Give examples of these classes. 



145. Eead the paragraph on subterranean stems. 



