Giardia lamblia, which adheres to the intestines and causes Giardias, is included in Diplomonadida. ... All members of Oxymonadida are parasites that live in the intestines of cockroaches and termites. Class Parabasalia also live in the intestines of insects and are parasitic or symbiotic. ... Phylum Xenophyophora Members of phylum Zenophyophora were first identified as sponges and were later believed to be large marine rhizopods; both of these observations were incorrect. ... Their cilia have the same ultrastructure but are modified to perform various functions. ...

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• Grade Level: Undergraduate