1 96 Elementary Botany 



70. What is meant by definite and indefinite inflorescence ? Give ex- 

 amples and draw diagrams to explain your answer. (1875.) 



71. If an inflorescence appears at the end of a branch of a tree, what 

 is the effect on the future growth of the branch ? (1879.) 



72. Tabulate the principal indefinite inflores cgnces. 



73. What is meant by ' mixed inflorescence ' ? 



74. What is a flower? What structures compose it, and what ate 

 their use? (1877.) 



• 75. Give the names and brief descriptions of the enveloping and essen- 

 tial organs of a flower. (1875.) 



, 76. Some English plants have one, others have two, and even three 

 kinds of flowers. Explain how this is possible. (1879.) 



77. Explain the terms ' polygamous,' ' dioecious,' ' gynandrous,' 

 ' syngenesious,' 'hypogynous,' ' perigynous,' 'inferior,' 'epigynous.' 



78. Explain fully the various respects in which a petal difiers from a 

 leaf. (1880.) 



79. How do you explain the fact that while the leaves of most plants 

 are green their flowers are of some other colour? (1878.) 



80. What is pollen ? What is its use ? (1875 and 1878.) 



81. What is meant by an inferior ovary ? Give examples. (1875.) 



82. What is meant by placentation ? Describe the various forms. 



83. What is a placenta ? Describe the placentation in the Cruci- 

 ferse, the Leguminosee, and the Liliaceee. 



84. Explain the terms ' monadelphous,' ' diadelphous,' ' adnate, 

 'innate,' 'versatile,' 'introrse,' 'extrorse.' 



85. Mention plants whose flowers contain nectar. What is its use ? 



(1877.) 



86. Describe the general structure of an ovule. 



87. Explain the terms 'orthotropous,' ' anatropous,' 'raphe,' 'hilum, 

 'micropyle,' 



88. Draw a diagram showing the arrangement of the parts of the 

 flower of a leguminous plant as seen in transverse section. Point out in 

 what respects it differs from the arrangement typical of flowers generally. 

 (1883.) 



89. Draw a diagram showing the arrangement of the different parts of 

 the flower of any Crucifer. (1882.) 



90. Explain what is meant by an irregular flower. What is the ad- 

 vantage to a plant of having such flowers? (1878 and 1881.) 



91. What provisions are made for cross-fertilisation ? 



92. What is a fruit ? 



93. Explain the terms 'syncarp,' ' pseudocarp,' 'drupe,' 'achene,' 

 ' pome.' 



94. Classify the dehiscent fruits. 



95. What is. a berry? What is the advantage to a plant to have this 

 kind of fruit ? (1877.) 



