Question

Mixotrophic organisms like euglena and chlorarachniophytes are photosynthetic but...

A.they often loose their symbiotic relationship with algae and need to become heterotrophs.

B.they will eat other unicellular organisms or dead organic matter when there is not enough sunlight for photosynthesis.

C.their photosynthetic pigments can only process red and orange light.

D.they prey on bacteria in order to get protein to supplement the carbohydrates they produce by photosynthesis.