SEEDLINGS 101 
Seedlings 
After the radicle and plumule have escaped from the seed cov- 
erings, the young plant passes into the seedling stage, which lasts 
until the young plant becomes entirely self-supporting, that is, 
Tic. 95. — Early stages in the development of the Corn seedling. A, 
section through kernel, showing cotyledon (c), radicle (r), and plumule (p). 
B, after germination with radicle or primary root (r) and plumule (p) much 
elongated. Cy, radicle (r) and plumule (p) much further developed; s, sec- 
ondary roots; 1, leaves; t, coleoptile. 
until it no longer receives any of its food supply from the seed. 
From the seedling stage the plant passes into the adult stage, ex- 
cept in trees where a sapling stage occurs. However, the division 
