SI'EKMATnl'llYTF.S: AN(;l( ISI'KIIMS 



4(i) 



velops the pollen-tube, which penetrates the style to reach 

 the ovary cavity which contains the ovules (niegasporangia). 

 The impossibility of contact between pollen and ovule im- 

 plies inclosed ovules and hence seeds, and therefore the 

 name " Angiosperm." 



(2) The female gametophytc is but slightly develoiied 

 before fertilization, the egg appearing very early. 



(3) The female gametophytc produces no archegoiiia, 

 but a single naked egg. 



