Cellular 

 sheath of 

 Rootlet 

 forming 

 capsule 

 of nodule. 



NITROGEN FIXING BACTERIA IN SITU IN NODULE ON ROOTLET OF PEA 



X 400 



NITROGEN FIXING BACTERIA IN SITU 



IN ROOT-NODULE OF PEA 



(Section of Nodule) 



X 500 



NITROGEN FIXING BACTERIA IN SITU 

 IN ROOT-NODULE OF PEA 



(Section of Nodule) 

 X 600 



