open!
Open
most animilia in phylum mollusca have an open ciculatory system along with a false ceolom
No, mollusks typically have an open circulatory system, where the blood flows around the body cavity and directly bathes the organs. This is in contrast to closed circulatory systems found in some other animals where the blood flows through vessels.
Arthropods and most mollusks have an open circulatory system.
Cephalopods are a phylum of mollusks that include squids, octopi, the chambered nautilus, and cuttlefish. All cephalopods have tentacles, most are carnivores, and they are all mollusks. All mollusks have a radula, or toothy tongue, a mantle, or thin layer of tissue that covers the organs and makes the shell, and a muscular foot.
most have shells
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It is the most complex type of mollusks.
Most are in water.
cephalopod
In the seas
Most mollusks are free-living but there are a few that are parasitic.