Are eubacteria autotrophic or heterotrophic?
Eubacteria are both autotrophic and heterotrophic.
Some eubacteria (true bacteria) contain organelles that allow them to gather sunlight.
This is a subgroup called cyanobacteria, also called blue green algae, and they are photosynthetic.
The rest of the eubacteria can not make their own food so they are heterotrophic.