multiple choice\nwhich of the following organisms has an eye - spot and is a mixotroph?\nradiolarians\ndiplom…

Brief Explanations:

Euglena has an eye - spot (stigma) which is light - sensitive and is a mixotroph, capable of both photosynthesis (autotrophic) and ingesting food (heterotrophic). Radiolarians are mainly heterotrophic. Diplomonads are heterotrophic and lack chloroplasts. Nucleoids are not organisms but regions in prokaryotic cells where the genetic material is located.

Answer:

C. Euglena