21. Finally, some protists lacking mitochondria were discovered. 22. Protists are a large group of diverse tissues.23. Archaezoa is composed of two kingdoms of protists , Kingdom Diplomadida and Kingdom Parabasala. 24. In some protists , fertilization also involves sperm syncytical antheridium surrounding the egg cells. 25. Thus, the protist exhibits an unusual life cycle of alternating autotrophy and heterotrophy. 26. Like other protists , tintinnids are complex single-cell ( Eukaryota ) organisms. 27. As soon as the protist dies and starts decaying silica dissolution affects the skeleton. 28. Amoeba have generally been regarded as asexual protists . 29. The Eccrinales and Amoebidiales are opisthokont protists , previously thought to be zygomycete fungi. 30. Animals are considered by biologists to have fungi and a few small parasitic protists .
