STRUCTURE AND GERMINATION OF SEEDS 



19 



CHAPTER II 

 STRUCTURE AND GERMINATION OF SEEDS 



(a) Dicotyledons 

 Our analysis of the growing Stock showed that the plant 

 consisted of a number of organs. We shall now show that 

 these organs come into existence successively, and how 



Fig. 6. The Bean Pod. 1, side view ; 2, pod opened along 

 the inner or ventral suture ; fu, funicle ; k, calyx ; p, placenta ; 

 st, stigma. 



they perform their twofold function, (1) in helping to 

 sustain the life of the plant, and (2) in providing materials 

 for the growth of succeeding organs. The requisite data 

 are easily derived from observation and experiment. 

 Pod and seeds of the Bean. The Broad Bean provides 



b 2 



