Fig. 1.4 Flagellar arrangements
Endoflagella (axial filament) It is the organ of motility found in periplasmic space of spirochetes.
C. Pili (fimbriae) It is hair like structure composed of protein (pilin)
Two types (Based on function) . Common pili: The structure for adherence to cell surface. . Sex pili: The structure for transfer of genetic material from the donor to the recipient during the process of conjugation.