Special cells: Sponge has special collar cells (or collar cells) that are unique in the animal kingdom. They have a bristles, whip-like structure and act to set the water flow so that the sponge can sift food particles from the water.
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A strange name for a group of animal crocodiles 25 – congregation. Apes – wisdom. Bats – colonies or cauldrons. Bear-Detective. Cat-Clouder. Crow-murder. Donkey-Pace. Ferret – Business.
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