How did the phylum Mollusca get its name?
Includes: Clams, Snails, Slugs, Nautilus, Squid, Octopus
The word mollusc comes from the Latin meaning “soft,” a good description of the group’s fleshy bodies. Of course, in an ocean filled with predators, a soft body is easily eaten.
What is the common name for Mollusca?
The phylum Mollusca is the second most diverse phylum after Arthropoda with over 110,000 described species.
What is the Latin meaning of cephalopoda?
cephalopod (n.)
one of a class of mollusks notable for having tentacles attached to a distinct head, 1825, from French cephalopode, from Modern Latin Cephalopoda (the class name), from Greek kephalē “head” (see cephalo-) + pod-, stem of pous “foot” (from PIE root *ped- “foot”).
Why octopus is Mollusca?
Hint: Octopus belongs to phylum Mollusca. They have bilateral symmetry, body divided into the foot and visceral mass, and have a triploblastic body.
What are the 4 major molluscs?
The major classes include gastropods, bivalves, and cephalopods. Use the resources below to answer the questions that follow. The world’s largest mollusk is a colossal squid, which measures 14 feet in length. The smallest mollUSks are snails that are microscopic in size.
What is the Latin meaning of the phylum class?
phylum (n.)
“a primary division of the plant or animal kingdom, a genetically related tribe or race of organisms,” 1868, Modern Latin, coined by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832) from Greek phylon “race, stock,” related to phylē “tribe, clan” (see phylo-).
What is the meaning of Polyplacophora?
Definition of Polyplacophora
: an order of Amphineura comprising the chitons all of which have the foot occupying the whole ventral surface of the body and the shell composed of eight calcified dorsal plates.
Is jellyfish a mollusc?
Octopus vs Jellyfish
Octopus is categorized under Phylum Mollusca while Jellyfish is categorized under Phylum Cnidaria. The main similar feature of octopus and jelly fish is the presence of soft body.
Do octopus have 3 hearts?
An octopus’s three hearts have slightly different roles. One heart circulates blood around the body, while the other two pump it past the gills, to pick up oxygen.
Is octopus a mollusc?
Cephalopods are a group of molluscs that include the pearly chambered Nautilus, squids, and the octopus. They can be divided into three categories: the Nautiloidea (chambered Nautilus), the Ammonoidea (the extinct ammonites), and the Dibranchiata (squids, the extinct belemnites, and octopuses).
What is a mollusk without a shell called?
slugs). Bivalves are mollusks with two shells such as clams and oysters. Univalves are animals with one shell such as a snail. Mollusks without shells include squid, banana slugs, and octopi.
What is the Greek and Latin root of animal?
animal (n.)
early 14c., “any sentient living creature” (including humans), from Latin animale “living being, being which breathes,” noun use of neuter of animalis (adj.) “animate, living; of the air,” from anima “breath, soul; a current of air” (from PIE root *ane- “to breathe;” compare deer).
What does Cnidaria mean in Latin?
nettle, sea nettle
New Latin Cnidaria, phylum name (from Greek knī́dē “nettle, sea nettle”—of uncertain origin— + Latin -āria, neuter plural of -ārius -ary entry 2) + -an entry 1. Note: The taxon Cnidaria is based ultimately on French cnidaire, a vernacular designation for a sub-class used by H.
What is mean by bivalvia?
: being or having a shell composed of two valves. bivalve. noun. Definition of bivalve (Entry 2 of 2) : any of a class (Bivalvia synonym Pelecypoda) of typically marine mollusks (such as clams, oysters, or scallops) that have a 2-valved hinged shell, are usually filter feeders, and lack a distinct head.
How do you say Polyplacophora?
How to pronounce Polyplacophora – YouTube
Is octopus a fish?
An octopus is neither a fish nor an amphibian. It is a mollusk. More specifically, it belongs to the taxonomic class Cephalopoda, along with squid and cuttlefish. Octopuses and squids are the most intelligent of all mollusks.
Is octopus a mollusk?
Which animal has 32 hearts?
Since octopus blood is very copper-rich, it’s exceptionally viscous. As a result, it requires a significant amount of pressure to pump blood through its body. To compensate, the octopus evolved three separate hearts to take stress off of its systematic heart and ensure it gets enough oxygen into its gills.
What animal has 9 hearts?
But their circulatory system is just as unusual. The octopus has multiple hearts, and that fact can reveal secrets about its evolutionary history while also informing our understanding of how they manipulate their environments.
Is Oyster a mollusk?
Bivalve mollusks (e.g., clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate.
Do mollusks have brain?
In general, mollusks have 3 body regions: a head, a visceral mass, and a “foot.” The head contains the sense organs and “brain,” while the visceral mass contains the internal organs.
What are the 3 types of mollusk?
The three major groups of mollusks are gastropods, bivalves, and cephalopods (SEF ul o pods). The largest group is the gastropods. These are mollusks like snails and slugs that have just one shell or no shell at all. Gastropods creep along on their broad foot.
What is a Latin root word?
A root word is the Latin or Greek basis of a word that, generally speaking, can’t be used as a standalone word. You may also see just “root” used to refer to the basic Greek or Latin word part that cannot stand alone.
What’s the meaning of porifera?
: a phylum of primitive invertebrate animals comprising the sponges and having a cellular grade of construction without true tissue or organ formation but with the body permeated by canals and chambers through which a current of water flows and passes in its course through one or more cavities lined with choanocytes.
What is the mean of Coelenterata?
coelenterate. / (sɪˈlɛntəˌreɪt, -rɪt) / noun. any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals.