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Microbes and You 



Nuclei 



NON SEPTATE 



Septa 



SEPTATE 



MOLD HYPHAE 



Sporangiospores 



Sporangium 



Sporangio- 

 phore 



\/. 



mC- 



Xc3 



^Rhizolds 



GEOTRICHUM 



RHIZOPUS 



Ascospores 



Fig. 61. Mold structures. 



(singular septum), and such molds are referred to as septate in 

 contrast to the non-septate molds which lack these cross-walls. 

 Specialized cells, concerned primarily with obtaining nutrients for 

 the plant, are called vegetative hyphae, and reproductive struc- 

 tures formed on aerial hyphae are known as fertile hyphae. Each 



