Question

multiple choice question
siliceous ______ originate from diatoms and radiolaria.

○ oozes
○ tests
○ sands

Explanation:

Siliceous oozes are biogenic sediments composed mainly of the silica - based remains of organisms like diatoms (which are a type of algae) and radiolaria (a type of protozoa). Tests are the hard outer coverings of some organisms, but siliceous tests from diatoms and radiolaria accumulate to form siliceous oozes, not that the tests themselves are what is referred to in the context of originating from these organisms in this way. Sands are typically composed of mineral particles and not related to the remains of diatoms and radiolaria. So the correct term is oozes.

Answer:

A. oozes