CULTIVATED CARROT 



445 



After a time it is noticed that in many cultivated forms, and 

 especially those grown in gardens, the hypocotyl, which is at 



X C — . 



Fig. 135.— Carrot seedlings at four successive stages of growth, a Hypocotyl ; i cotyledon ; 

 c root ; d first foliage-leaf. 



first above ground, becomes gradually drawn below the surface 

 by the contraction of the root ; the hypocotyl itself sometimes 



