Hello Mr. Catron,
I have the answer to the April 22nd question. Radiolarians belong to the kingdom Protista. Some characteristics of Protista are that they are eukaryotic, unicellular or multicellular. Protists can reproduce sexually or asexually. They some can move using psuedopods, flagella or cilia. There are over 55,000 known living species.
Luke McFadden, Billings West High School