The sponge has cell-level organization. That is, cells are specialized so that different cells perform different functions, but similar cells are not organized into tissues, and the body is a kind of loose aggregate of different types of cells.
What level of tissue does the sponge reach?
Sponge has cell-level body tissue.
What is the only body system that the sponge has?
The sponge has no nervous system, digestive system, or circulatory system. Instead, most people rely on maintaining a constant stream of water through their bodies to get food and oxygen and get rid of waste products.
What are the two types of body support structures for sponges?
Sponge spicules: Structural elements found in most sponges that provide skeletal-like structural support. Sponge spicules can be made of silica or calcium carbonate. Flagella: A whip-like structure attached to the ends of choanocytes. They pump water through the body of the sponge.
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