Anus of sea star
The aboral surface of the sea star, which is the side farthest from the sea stars mouth, food is regurgitated rather than released through the sea star's anus. 7.
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common .. Part of the gut is retained but the mouth and anus move to new positions. Some of the body cavities degenerate but others become the water.
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Description:Moon snails Polinices spp. This enlarges and extends around the surface and eventually onto two developing arm-like outgrowths. Spawning takes place at any time of year, each species having its own characteristic breeding season. The dermis contains an endoskeleton of calcium carbonate components known as ossicles.
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Date: 2018-09-20
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