BEAN OR PEA 237 



Cut the stalk ; examine and describe its structure. 



12. Corn Flowers. Where are the corn flowers located? 

 Make a drawing of the tassel. Make a drawing showing one 

 pair of spikelets in place. Separate the parts of a pair of 

 spikelets. Make drawings of parts and drawing to show their 

 position. 



Make a drawing of a young ear in silk. The husks are bracts. 

 Remove the husks from one side. Make drawing and show the 

 relation of the silk to the grains. 



Each grain is a single flower. What do the grains and 

 silks correspond to in other flowers ? 



Explain pollination in the corn flower. 



13. Wheat Kernel and Its Germination. Examine a grain 

 of wheat and compare it with a grain of corn. 



Make germination studies the same as in corn. 



14. Wheat Plant and Flower. Compare a stalk of wheat 

 with a stalk of corn. 



Where are the flowers located ? Make a drawing of a head 

 of wheat. Remove a number of spikelets and make a drawing 

 to show their attachment. Dissect a spikelet and show the fol- 

 lowing parts: Glumes, palea, stamens, ovary and stigmas. 

 Make drawings of each part and drawing to show their relation 

 to each other. 



15. Oats. Repeat the preceding exercise, using oats in- 

 stead of wheat. 



16. Bean or Pea. Make a drawing of the leaf and label 

 all parts. If the plant is a climber explain! method of climbing. 



Dissect the flower. How many sepals ? Make drawings. 

 (Fig. 47.)' 



Note that there is one large petal or standard, two smaller 

 petals or laterals and two others which form the keel. Make 

 drawings of each and diagram to show the arrangement. 



How many stamens and what is their arrangement? Make 

 drawing. 



