THE PARTS OF THE SEED 21 
one part showing the seed coat, the position 
of the papery lining, the cotyledons as well as ee) 
the short root and stem. Cut a seed in two, _ section of ‘ 
crosswise, and sketch, showing all the parts. oe ee 
The sunflower seed. ‘I'he sunflower seed can be split 
open to remove the seed coat in the same way as 
the marrow seed. The meat occupies much the same 
position, and 1s covered with a papery layer. While | 
the proportions are different, the general 
shape of the plantlet reminds one of that 
of the marrow or squash. The root and 
mG. 41, Sunflower StCM are more prominent. There are two 
seed split open’ flat cotyledons. As we spread them apart 
showing ‘meat,’ 
theembryoinright we gee that they are joined to the end of 
and papery cover- 
se the stem; we can also see between them 
seed coat. : : 
the tiny bud. It we cut the seed in two, 
as we did the marrow seed, we shall see that the 
relation of the parts is much the same. 
lengthwise of the seed. Make a sketch of () 

Structure of the maize seed. In the germination of 
the maize we have seen that the root comes out at the 
small end of the kernel in the groove on 
one side, while the leaves first appear on Ce 
the same side at the other end of this 
groove. If the tiny plant is present in i, 
the seed, then it should be found in the of sunfiower with 
one cotyledon re- 
groove. Split the soft kernel lengthwise — movea. 
— 
’, 
W/ 
Vv 
