DIRECTIONS FOR STUDY 



73 



K, Nutrition and Growth: 



1. Is photosynthesis carried on by both gametophyte 

 and sporophyte? Transpiration? Absorption of 

 water from the soil? 



2. Explain the need of stomata in the sporophyte. Are 

 they present in the gametophyte? Explain. 



3. Discuss the presence or absence of a conducting 

 system in the pro thallium and sporophyte. 



4. Explain how the presence of the cushion of the pro- 

 thallium is related to the needs of the young sporo- 

 phyte. 



5. Is the gametophyte of Poly podium ever dependent 

 upon the sporophyte for its nutrition? Its exist- 

 ence? 



L. Comparison of Gametophyte and Sporophyte of Poly- 

 podium: 

 Copy the following table into your note-book, and mark 



x after the word gametophyte or sporophyte in the 



proper column. 



TABLE I 



