Parasitic fungi have modified hyphae called haustoria - nutrient absorbing hyphae that penetrate host tissue, but remain outside the host cell membrane. Fungal hyphae may be aseptate or septate . Hyphae of aseptate fungi lack cross-walls and are coenocytic , formed from repeated nuclear division without cytokinesis. Hyphae of septate fungi are divided into cells by crosswalls called septa . Pores in the septa allow organelles to move from cell to cell.
True fungi have no flagellated stages in their life cycle.