Types of Mollusks - Characteristics And Examples
Dec 13, · There are only three characteristics shared by all living mollusks: the presence of a mantle (the rear covering of the body) that secretes calcareous (e.g., calcium-containing) structures; the genitals and anus opening into the mantle cavity; and paired nerve cords. Despite their amazing diversity, all molluscs share some unique characteristics that define their body plan. The body has a head, a foot and a visceral mass. This is all covered with a mantle (also known as a pallium) that typically secretes the shell.
Asked by Wiki User. A squid is in class Cephalopoda, which makes it a mollusk. Yes it is a mollusk with ten arms. No, it is a cephalopod mollusk, not a mammal.
No, it is a mollusk. A squid is a mollusk, or more specifically a cephalopod. Squid and Octopuses squld Cephlapods. Slugs, snails, squid, and octopus are common Mollusk. The answer is The giant squid IS a mollusk. Because octopuses or octopus are mollusks, that makes the squid a mollusk because they are exactly alike except they swim different.
Plus it mllusk a calcareous shell which means more pieces like one, two, or three pieces. They are Invertebrates, which includes the phylum 'mollusk'. Snails, slugs and squid- along with animals such as octopus -belong to this mollusk phylum. It has a shell, which is called the pen. An octopus and squid; But for the crossword its Cephlopods.
It's a celaphod. The giant squid. Cephlapods include squid, octopus, cuttlefish and screen grab how to mac and are a Mollusk. Cephalopoda are the class of mollusks that include squid and octopus. Squid are of the orders Myopsida and Oegopsida, and octopus belong to the order Octopoda. Ask Question. See Answer. Top Answer. Wiki User Answered Related Questions.
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These are mollusks with two shells that they can close up tight for protection. Finally there is Cephalopoda, the squids and octopuses. They only live in salt water, so we won't say much about them here. They have no shells, but are larger, smarter, and faster than their relatives in the other groups. Squid and octopuses have a well-developed nervous system and large eyes which are similar to human eyes. Cephalopods are the only mollusks that have closed circulatory system, which the blood contains food and oxygen that moves through the body in a series of closed vessels. Just like a human's blood that moves through their blood vessels. Aug 02, · Mollusk digestive system some characteristic features: Stomach: they follow extracellular digestion. This means that the digestible particles are selected by the digestive Radula: is an organ located inside a mollusk’s mouth, this membrane is .
Mollusks are a large group of invertebrate animals. Mollusks have soft bodies, and their bodies are not divided into rings like the segmented worms called annelids. Mollusks don't have legs, though some have flexible tentacles for sensing their environment or grabbing things.
Most mollusk species grow a hard shell for protection, but their shell grows in only one or two pieces. It doesn't have joints like the exoskeletons of insects and crustaceans. There are almost , species of mollusks around the world, and many tens of thousands more undiscovered. Most mollusk species only live in the ocean, but some live in freshwater or on land. In Michigan there are about species of mollusks known, with more to be found.
There are three main groups of mollusks. Snails Gastropoda are the most diverse group, there are tens of thousands of species. Nearly all snails grow a spiral shell that is all one piece. A few snail groups have stopped growing shells; they're called slugs. The next largest group is Bivalvia , the clams, oysters, and mussels. These are mollusks with two shells that they can close up tight for protection.
Finally there is Cephalopoda , the squids and octopuses. They only live in salt water, so we won't say much about them here. They have no shells, but are larger, smarter, and faster than their relatives in the other groups. Squids and octopuses are all predators; they eat fish, crustaceans, and other mollusks.
Animal Diversity Web Cybertracker Tools. All rights reserved. Skip directly to main content. Kids' Inquiry of Diverse Species. Critter Catalog. Information Pictures Specimens Maps Classification. Local animals in this group: snails and slugs. Additional information: Find snails, clams, squids and octopodes information at Encyclopedia of Life.