Weba body cavity that most animals possess. hibernation. a state in which an animal's breathing rate slows down to only a few breaths per minute and the body temperature drops substantially. innate behavior. a behavior that an animal is born with. instinct. the complex pattern of innate behavior. migration. WebMar 5, 2024 · Mollusks are a very diverse phylum. Some mollusks are nearly microscopic. The largest mollusk, a colossal squid, may be as long as a school bus and weigh over half a ton! The basic body plan of a mollusk is shown in Figure below. The main distinguishing feature is a hard outer shell. It covers the top of the body and encloses the internal organs.
Mollusk Definition, Characteristics, Shell, …
WebJul 12, 2024 · Learn more about sea star anatomy and how they use their body parts so you can better appreciate this unique sea creature. ... One type of prey for sea stars are bivalves, or animals with two shells. … Bivalves have bilaterally symmetrical and laterally flattened bodies, with a blade-shaped foot, vestigial head and no radula. At the dorsal or back region of the shell is the hinge point or line, which contain the umbo and beak and the lower, curved margin is the ventral or underside region. The anterior or front of the shell is where the byssus (when present) and foot are located, and the posterior of the shell is where the siphons are located. With the hinge uppermost and with the a… sonic cash ins
Telltale Shell Parts: The Pallial Sinus - shellmuseum
WebTheir bodies are flattened from side to side and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper (dorsal) region of the body. ... superficially resembling the shell of … Webbivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves. The valves are connected to one … The bivalve body comprises a dorsal visceral mass and a ventral foot, which … WebBivalves belong to the phylum Mollusca, a group that includes such diverse animals as chitons (chain shells), gastropods, tusk shells, cephalopods (squid and octopus) as well … small home excavator