1917 

 BOTANY 



Friday 2 p.m. Two hours 



Answer three questions of each group, and one additional question which may be 

 selected from any group. 



Group I 



1. Make a drawing of one cell of an alga and label all the parts. 



2. Enumerate the differences in structure between a woody dicotyledonous 



stem such as an oak and a monocotyledonous stem such as corn. 



3. Compare by labeled drawings the following floral t\^es: (a) hj-pogynous 



(superior) and epigynous (inferior); (b) regular and irregular. Give the 

 name of the plant used to illustrate each. 



4. (a) Name four different t^^pes of edible fruits, (b) What floral parts enter 



into each of them ? 



5. (a) In what different parts of a seed may its food supply be stored ? 



(b) Name three foods found in seeds, (c) How would you detect the 

 presence of each experimentally ? 



Group II 



6. Describe fully with illustrations the life history and life processes of the 



yeast plant. 



7. (a) Name two families of monocotyledons and three families of dicotyledons. 



Gi\'e a representative plant of each family, (b) Give one characteristic 

 by reason of which you assign each plant named in answer to (a) to its 

 particular family. 



8. Explain fully what is meant by the expression "alternation of generations." 



In what group of plants is this phenomenon most obvious ? 



9. (a) Explain the use of the terms: species, genus, and family as used in botany. 



(b) Select a plant known to you and give its scientific name and the 

 family to which it belongs. 



10. Describe the process of photosynthesis, indicating (a) the substances used, 



(b) where each is obtained, (c) how each is obtained, (d) the conditions 

 necessary for carr\'ing on the process, and (e) the substances produced. 



Group III 



11. (2) Name four plants important because of their medicinal value, (b) In 



what part or parts of each plant does the medicinal material occur ? 



12. Give a brief discussion of forests, including (a) areas of greatest density in 



the United States, (b) uses of the forests, (c) dangers to the forests, 

 (d) methods used in conserving the forests. 



13. Describe briefly two methods by which plant breeders are improving plants. 



14. Explain three ways in which soils may be impro^•ed for agricultural purposes. 



15. From what plant and from what part of the plant is each of the following 



food and textile products obtained: cotton, linen, manila-hemp, flour, 

 tapioca, cinnamon, sugar, and coffee? 



