kernels of corn on the immature car of corn which you have at hand? (b) Assuming the 

 corn kernel to be. the ovary of the pistil, locate and describe its style and stigma, (c) How 

 does the length of the style of 

 the corn plant compare with the 

 length of • the style of the 

 wheat plant? (d) What common 

 name is applied to the style and 

 stigma of the corn plant? (c) If 

 a paper sack is tied over an ear 

 of corn, just before it starts to 

 silk, and kept there for at least 

 two weeks what will be the result? 

 (f) How do you explain the fact 

 that when yellow corn and white 

 corn are planted near each other, 

 kernels with white caps will be 

 found in the yellow corn and ker- 

 nels with a yellowish tinge will 

 be found in the white corn? (g) 

 Can you find anything about the 

 kernel of common corn which sug- 

 gest the glumes found in the tas- 

 sel of the corn plant and about 

 the flowers of most other grasses? 

 (h) Examine an ear of pod corn. 

 Do you find the pistillate flowers 

 more or less like those of other 

 grasses than is the case with com- 

 mon corn? 



10. (a) Before maturity the 

 ear of corn stands erect. What 

 advantage is there in holding this 

 position before maturity? (b) 

 On ripening the ear takes a hang- 

 ing position. What advantage is 

 there in this position after matur- 

 ity ? 



Fig. 27. Three immature kernels of corn showing attachment of silks. 

 (Nebraska Experiment Station.) 



60 



