A porous test (shell) of calcium carbonate, through which pseudopodia protrude, is characteristic of ________.
A) diatoms
B) foraminiferans
C) ciliates
D) water molds

Question

Quizplus · Accepted Answer

A porous test of calcium carbonate is a characteristic feature of foraminiferans, which are single-celled protists that form calcium carbonate shells, often with perforations through which they protrude pseudopodia. Diatoms have silica-based shells, ciliates have hair-like cilia for movement, and water molds are not known to produce shells.

A Porous Test (Shell) of Calcium Carbonate, Through Which Pseudopodia