question: Sponges have specialized work horse that produce a constant flow of what to the sponge?
choices.text: cells mucus oxygen lymph water Sperm tissue Blood
choices.label: A B C D E F G H
fact2: Collar cells produce a constant flow of water into the sponge.
combinedfact: sponges have specialized work horses that produce constant flow of water to the sponge.
formatted_question: Sponges have specialized work horse that produce a constant flow of what to the sponge? (A) cells (B) mucus (C) oxygen (D) lymph (E) water (F) Sperm (G) tissue (H) Blood