Question

Radiolarians have a cell wall made of

Answer 1

Radiolarians have a cell wall made of .....
According to
 https://microbewiki.kenyon.edu/index.php/Radiolaria
"
Radiolaria are unicellular organisms. They have mineral skeletons (tests) that are composed of silica. The tests are formed through the absorption of silicon compounds. This skeleton is covered with cytoplasm, which is withdrawn if the organism is disturbed."
There cell wall is made of according to another website
...
 "Radiolaria....have cell walls made up of thick cellulose walls"
Hope this helps:)
@SamSamySamantha