GAMETOPHYTE 



61 



of gases during photosynthesis and respiration. The gameto- 

 phyte bears the antheridia or male reproductive organs and 



FIG. 2S.Hepaticce. (Marchantia polymorpha) . The upper left figure 

 is an antheridium filled with sperms. The lower left is an archegonium with 

 a large egg cell. The lower right figure shows a young sporophyte developed 

 as a result of the union of the sperm and the egg cell. The upper right figures 

 show the sporangium with spores in the tetraspore stage and above this 

 separated spores and elaters with spiral bands. 



the archegonia or female reproductive tissue. The antheri- 

 dium is rounded or oval in form, and filled with biciliated 

 sperms which escape when water is present and enter the 



