ISO QUESTIONS. 



46. Name and define the several kinds of Corolla, 

 p. 49. 



47. What is the Nectary ? p. 53. 



48. Of how many parts does a Stamen consist ? p. 54. 



49. Which of these is essential and always present, 

 and which sometimes wanting ? p. 54. 



50. What is the Pollen ? p. 54. 



51. What causes the Anther to burst? p. 55. 



52. What are the grains of Pollen ? p. 55. 



53. What causes the grains of Pollen to burst ? p. 55. 



54. Of what parts does a Pistil consist? p. 55. 



55. Which of these is absent in some flowers ? p. 55. 



56. What. are the functions of the stamens and pis- 

 tils ? p. 56. 



57. From the office the stamens and pistils perform, 

 is it necessary they should be present in every species 

 of plant ? 56. 



58. When a flower has stamens only, what is it cal- 

 led ? p. 57. 



59. When a flower has pistils only, what is it cal- 

 led ? p. 57. 



60. When a flower has stamens and pistils both, 

 what is it called ? p. 67. 



61. What part of the flower forms the seed-vessel or 

 Pericarp ? p. 57. 



62. What are the various kinds of pericarps? p. 57. 



63. What part of the fructification are all the other 

 parts designed to perfect ? p. 59. 



64. What is the Receptacle ? p. 62. 



65. When is the receptacle called proper and when 

 common ? p. 62. 



66. What is an aggregate flower ? p. 62. 



67. Define the several kinds of aggregate flowers 

 p. 62. 



68. What is the use of dividing arid subdividing the 

 vegetable kingdom into Classes and Orders ? p. 64. 



69. Why are the Classes and Orders called Artificial 

 divisions ? p. 64. 



