Is sponge an autotroph

Answer 1

No. Despite its looks, sponge is an animal which filter feeds, which makes it a heterotroph.

In early stages of its life, it is actually motile and moves around until it finds a suitable space to grow and become a sponge. Once it grows, it can bring in water and get the nutrients present in the water through diffusion.

Answer 2

No, sponges are not autotrophs. They are filter feeders, obtaining their nutrients by filtering small particles from the water. Autotrophs are organisms that can produce their own food through photosynthesis or chemosynthesis.