Foraminiferan and radiolarian lineages are related, but different in that one ____ and the other ____.

A) has a mineral-based shell; does not have a mineral-based shell
B) has a chalk shell; has a silica shell
C) has a shell; does not have a shell
D) is heterotrophic; is completely autotrophic
E) has a single, large mitochondria; has many large mitochondria

Foraminiferan

Marine protozoans with calcareous shells, found in both fresh and marine waters, which are often used as indicators in paleoclimatology studies.

Radiolarian

Microscopic, planktonic marine organisms with intricate silica skeletons, used as paleoclimatic indicators.

Mineral-based Shell

A hard, protective outer layer created by some organisms, composed primarily of minerals.