what type of organism eats their food and also go to the toilet through the same mouth hole?

Answer 1

The first animals to eat and get rid of their solid waste through the mouth are the Cnidarians( Hydra, coral, sea anemone). The flatworm Planarian is another example. After the flatworms all the other animal phyla have a one way digestive system. That is a mouth for food intake and an anus to eliminate solid waste.

Answer 2

Hi. Most organisms do not use a toilet, but clams are a good example. http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-2109.2004.01007.x

Answer 3

worms