A Single-Celled Eukaryote That is Both Photosynthetic and a Chemoheterotroph

Question

A single-celled eukaryote that is both photosynthetic and a chemoheterotroph is a(n)
A) apicomplexan.
B) dinoflagellate.
C) euglenid.
D) ciliate.
E) kinetoplastid.

Accepted Answer

Euglenids are single-celled eukaryotes that can switch between autotrophic and heterotrophic modes of nutrition. They are photosynthetic and have chloroplasts, but can also ingest other organisms as a source of nutrients. The other options listed are not known to be both photosynthetic and chemoheterotrophic.