10 Interesting Facts About Mollusks

Thursday, December 29th 2011. | Animal


Facts about Mollusks are invertebrates that include animals such as squid, octopuses, cuttlefish, nudibranchs, snails, slugs, limpets, sea hares, mussels, clams, oysters, scallops, as well as many lesser known creatures. There are an estimated 100,000 species of molluscs making them second largest phylum in the animal kingdom, having fewer species than only the Phylum Arthropoda.  Here is the list of 1o interesting Facts about Mollusks

1. Facts about Mollusks there are eight groups of mollusks alive today. Aplacophorans (Class Aplacophora) are marine molluscs that burrow into the sea floor in deep waters. Bivalves (Class Bivalvia) are marine and freshwater molluscs that have a shell that consists of two valves that are hinged at the back. Caudofoveata (Class Caudofoveata) are small deep sea molluscs that burrow into soft bottom sediments. Cephalopods (Class Cephalopoda) include octopus, squid, cuttlefish and nautilus. Gastropods (Class Gastropoda) include snails and slugs. Class Monoplacophora, Class Polyplacophora, Class Scaphopoda.

eight groups of mollusks 10 Interesting Facts About Mollusks

Facts About Mollusks eight groups of mollusks

 

2. The body of most mollusks consists of two parts: a head-foot and a visceral mass. In general, the head-foot of a mollusc is an elongated, soft structure that encompasses an anterior head and an elongated foot.

consists of two parts 10 Interesting Facts About Mollusks

Facts About Mollusks consists of two parts

 

3. Facts about Mollusks have a mantle that secretes a hard shell that covers and protects the visceral mass. A layer of tissue called the mantle covers the visceral mass of a mollusk. The mantle secretes a shell that encases the mantle and the soft visceral mass below it.

Mollusks have a mantle 10 Interesting Facts About Mollusks

Facts About Mollusks have a mantle

 

4. Mollusks exhibit bilateral symmetry.

Molluscs exhibit bilateral symmetry 10 Interesting Facts About Mollusks

Facts About Mollusks exhibit bilateral symmetry

 

5. Most mollusks have an open circulatory system.

molluscs have an open circulatory system 10 Interesting Facts About Mollusks

Facts About Mollusks have an open circulatory system

 

6. Mollusks are more closely related to annelids than they are to arthropods.

Molluscs are more closely related to annelids 10 Interesting Facts About Mollusks

Facts About Mollusks are more closely related to annelids

 

7. Facts about Mollusks there are approximately 100,000 species of mollusks. Of all the molluscan subgroups, the most divers group is the gastropods.

100000 species of molluscs 10 Interesting Facts About Mollusks

Facts About Mollusks 100,000 species of mollusks

 

8. Some mollusks don’t have a shell.

Some molluscs dont have a shell 10 Interesting Facts About Mollusks

Facts About Mollusks some don't have a shell

 

9. Some mollusks don’t have a head.

Some molluscs dont have a head 10 Interesting Facts About Mollusks

Facts About Mollusks some don't have a head

 

10. Facts about Mollusks that the giant squid and the giant clam are among the world’s largest mollusks.

giant squid 10 Interesting Facts About Mollusks

Facts About Mollusks giant squid

 



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