Final answer:
Roadiolaria and Foraminifera both belong to the family of Rhizaria in the supergroup of protists.
Step-by-step explanation:
Roadiolaria and Foraminifera both belong to the family of Rhizaria in the supergroup of protists. Roadiolaria are protists that exhibit intricate exteriors of glassy silica with radial or bilateral symmetry and have needle-like pseudopods, while Foraminifera are unicellular heterotrophic protists that have porous shells called tests built from various organic materials and typically hardened with calcium carbonate.
Both Roadiolaria and Foraminifera are important members of the Rhizaria supergroup and have specific characteristics that set them apart from other organisms.