PHY SCI A SP. OR FARM ELI A SP. 77 



7. The distribution and relative amount of Fungus and Alga 

 in the interior of the body. 



8. The descending processes composed mainly of fungal 

 threads that connect the main body of the Lichen with the 

 support. 



9. Compare sections made from different parts of the plant 

 body. 



10. Make diagrams showing the distribution of the two ele- 

 ments that compose the Lichen. 



11. REPRODUCTION. 



1. The Alga. 



In the sections and dissections already made, observe: 



a. Cases where the algal cells are dividing to form new 

 ones. 



b. Whether abundant reproduction is occurring. 



c. Compare the reproduction of this Alga with that of 

 Pleurococcus. 



d. Illustrate reproduction of the Alga by drawings. 



2. The Fungus. 



By means of dissections or sections cut through the apothe- 

 cium and perpendicular to its upper surf ace, observe: 



a. The general outline of the cup as seen in section. 



b. The general distribution of Algae and Fungi within it. 



c. The surface of the cup formed of parallel fungal 

 threads, some club-shaped sacs the asci, in which are 

 the ascospores; som,e slender sterile threads crowded 

 closely about the asci, the paraphyses. 



d. The way in which the ascending threads are associated 

 with the Algae that supply food for the work of repro- 

 ducing the Fungus. 



e. Draw. 



