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While reading our webpage, try to look for the answers to the following questions:
What are the 3 classes that the phylum Mollusca is divided into?
TRUE or FALSE: Mollusks have a spine.
What is the shell of a mollusk made of?
How does a Mollusk bring food into it's body?
5. What are mollusk foots made of?
6. What are the 5 main kinds of mollusks?
7. What are the two main kinds of proteins in mollusk shells called?
8. What percent of mollusks are gastropods (snails and slugs)?
The Mollusk group has a very diverse, and range from small land based snails to large octopuses that dwell in the sea. Mollusks belong to the Kingdom of Animalia, the Superphylum Lophorochozoa, and the Phylum of Mollusca.They are invertebrates, that is creatures without a backbone.The Phylum Mollusca is divided into 3 major classes, Bivalvia, Gastropoda, and Cephalopoda. The class Bivalvia are filter feeding animals that stay in one location often attaching themselves, like oysters. The class Gastropoda are creatures that live on land or partially on land, for example slugs. The class Cephalopoda is a group of creatures that prey upon other organisms. The octopus is an example. Mollusks have similar ancestors yet have many completely unique forms.
Even though the phylum Mollusca includes a huge variety of creatures, they all share a similar body structure. A mollusk body typically consists of a Gut, Mantle, Foot and often but not always a Shell. The is foot a soft muscular structure that will often contains the mouth. The foot is very muscular and allows the organism to move. For example the Octopus has a foot that is split into tentacles that propel the creature. The gutis the Mollusks digestive tract. The mantleis a thin layer of tissue that surrounds part of the mollusks body. The shell is made up of calcium carbonate that is given off by the glands inside the mantle. Not all organisms in the Mollusk group has a shell but the creatures ancestors generally did have a shell. Some of the creatures that are grouped in the Mollusk phylum are snails, squids, octopuses, and clams. Many animals that are grouped in the phylum Mollusca inhabit the water but not all creatures in Mollusca do. The Snail is one example.
A Mollusk has an outer shell. It has a soft body. It has a muscular foot that it uses for movement. Mollusk has food brought in through a siphon system and then to its mouth. It then goes to a digestive gland and to its intestine. Wastes leave via the anus. They have no formal nervous system, but have a series of ganglia that conduct impulses. They also have a heart, blood, and blood vessels. There are 5 main kinds of mollusks, shellfish, octopus, snail, hermit crab, and squid. Shellfish are aquatic shelled mollusks or crustaceans, such as shrimp. Octopi are a cephalopod mollusk with eight sucker-bearing arms, a softsaclikebody, strong beaklike jaws, and no internal shell. A hermit crab is a crab with a soft non-symetrical abdomen that lives in a castoff mollusk shell for protection. And lastly, the squid. The squid is an elongated, fast-swimming cephalopod mollusk with ten arms(actually, eight arms and two long tentacles), typically able to change their color.
-Mollusk: An invertebrate of a large phylum that includes snails, slugs, mussels, and octopuses. There are around 85,000 recognized species of mollusks and are the largest marine phylum. 80% of all mollusks are gastropods (snails or slugs). They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell. Mollusks are very distinctive when it comes to their complex and distinctive shell. Their shell consists of mainly two types of protein called chitin and conchiolin hardened with calcium carbonate. All mollusks have a muscular mass of tissue called a foot. The mollusk foot functions in locomotion, but its structure is very different from a human foot. The foot is key for mollusks trying to survive, travel and protect themselves. Like mollusks, 95% of animals are invertebrates (animals without a backbone). There is a huge variety of mollusks including the five main types that include shellfish, squid, hermit crab, octopus, and snail. Mollusks are one of the most diverse animals in existence because of their behavior and habitat.
This squid has been frozen
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