Question

What do sponges use to digest food?

Answer 1

Sponges have digestive maintaining a constant water flow through their bodies.

Explanation:

1. Sponges are the members of phylum Porifera. They don't have nervous, digestive, circulatory systems etc. Most of them depend food supply on maintaining a constant water flow through their body.
2. Digestion in sponges occurs in individual cells. The cells envelop and break down food particles.
3. The tissues, organs and organ systems are absent in sponges. So, they lack digestive systems like other complex animals.
4. The tiny food particles are absorbed and digested in the cells.