POLYPOD1UM VULGARE 



79 



K. Nutrition and Growth: 



1. Is photosynthesis carried on by both gametophyte 

 and sporphyte? 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 prothallium 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 



