Types of Mollusks - Characteristics And Examples
- Chaetoderma elegans. This species of glisten worm, is shaped a mollusk without a shell. This type of mollusk belongs to the class Caudofoveata.
- Neomenia carinata. The Neomenia carinata is another vermiform mollusks without a shell, but belongs rather to the Solenogastres family.
- Sea cockroach (Chiton articulatus) The sea cockroach is a kind of endemic Polyplacophora marine mollusk from Mexico. It lives on the rocky substrate in intertidal zones.
- Antalis vulgaris. It is a species of Scaphopoda marine mollusk with a tubular shell or fang-shaped shell. ...
- Wedge clam (Donax trunculus) This Bivalve species, also referred to as the abrupt wedge shell or wedge clam, is a small marine mollusk that lives on the Atlantic and ...
- European flat oyster (Ostrea edulis) Oysters are one of the types of Bivalve marine mollusks of the order Ostreoida. ...
- Garden snail (Helix aspersa) The common snail is a species of Gastropod terrestrial mollusk that follows pulmonary respiration. ...
- Common octopua (Octopus vulgaris) The common octopus is a Cephalopod marine mollusk that lives in the Atlantic Ocean and the Mediterranean Sea.
| Class | Major organisms |
|---|---|
| Gastropoda | all snails and slugs including abalone, limpets, conch, nudibranchs, sea hares, sea butterflies |
| Bivalvia | clams, oysters, scallops, geoducks, mussels, rudists† |
| Polyplacophora | chitons |
| Cephalopoda | squid, octopuses, cuttlefish, nautiluses, Spirula, belemnites†, ammonites† |
What are the 3 classes of mollusks?
4 rows · Jan 24, 2020 · Phylum Mollusca is classified into seven classes; GASTROPODA (single shelled cowries, cones etc) ...
What is an example of a Mollusca?
Nov 10, 2021 · The Phylum Mollusca consist of 8 classes: 1) the Monoplacophora discovered in 1977; 2) the worm-like Aplacophora or solenogasters of the deep sea; 3) the also worm-like Caudofoveata; 4) the Polyplacophora, or chitons; 5) the Pelecypoda or bivalves; 6) the Gastropoda or snails; 7) the Scaphopoda, or tusk shells; and 8)
What animals belong to the phylum Mollusca?
Aug 20, 2019 · Mollusca examples Chaetoderma elegans Neomenia carinata Sea cockroach (Chiton articulatus) Antalis vulgaris Wedge clam (Donax trunculus) European flat oyster (Ostrea edulis) Garden snail (Helix aspersa) Common octopua (Octopus vulgaris) Marine molluscs Mollusk definition Mollusks are invertebrates whose integumentary system is soft like annelids.
Are mollusks invertebrates?
Mar 17, 2022 · Live mollusks may be divided into three primary groups: the gastropods, the bivalves, and the cephalopods (Figure below). Gastropods. Snails and slugs are examples of gastropods. They crawl with the help of their foot. Bivalves. Clams, scallops, oysters, and mussels are all examples of bivalves. Cephalopods.
What are three classes of mollusks and give one example from each class?
The major classes of living mollusks include gastropods, bivalves, and cephalopods (Figure below).Gastropods. Gastropods include snails and slugs. They use their foot to crawl. ... Bivalves. Bivalves include clams, scallops, oysters, and mussels. ... Cephalopods. Cephalopods include the octopus and squid.Mar 19, 2020
What are the 5 Mollusca classes?
Classes in Phylum Mollusca Phylum Mollusca is a very diverse (85,000 species ) group of mostly marine species, with a dramatic variety of form. This phylum can be segregated into seven classes: Aplacophora, Monoplacophora, Polyplacophora, Bivalvia, Gastropoda, Cephalopoda, and Scaphopoda.Nov 20, 2021
Which animals are examples of mollusks?
The molluscs include many familiar animals, including clams, snails, slugs, and squid, as well as some less familiar animals, like tusk shells and chitons (Fig. 3.51 A). Molluscs are found in nearly all freshwater and marine environments, and some are found also on land.
What are the 3 classes of Mollusca?
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 the class of Mollusca?
Snails and Slugs: Phylum Mollusca, Class Gastropoda.
What are the 8 classes of phylum Mollusca?
The Phylum Mollusca consist of 8 classes: 1) the Monoplacophora discovered in 1977; 2) the worm-like Aplacophora or solenogasters of the deep sea; 3) the also worm-like Caudofoveata; 4) the Polyplacophora, or chitons; 5) the Pelecypoda or bivalves; 6) the Gastropoda or snails; 7) the Scaphopoda, or tusk shells; and 8) ...
Are jellyfish molluscs?
Jellyfish are found all over the world, from surface waters to the deep sea. Scyphozoans (the "true jellyfish") are exclusively marine, but some hydrozoans with a similar appearance live in freshwater....JellyfishPhylum:CnidariaSubphylum:MedusozoaGroups included7 more rows
Is an octopus A molluscs?
octopus, plural octopuses or octopi, in general, any eight-armed cephalopod (octopod) mollusk of the order Octopoda. The true octopuses are members of the genus Octopus, a large group of widely distributed shallow-water cephalopods. (See cephalopod.)
Are starfish molluscs?
Starfish belong to the phylum Echinodermata. Mollusks are a separate phylum of animals. Although both phyla are made up of invertebrates, differences in their anatomy are why starfish are classified as echinoderms and not mollusks.
How many classes of molluscs are there?
Living mollusks are usually grouped into eight classes: Gastropoda (see gastropod), Bivalvia or Pelecypoda (see bivalve), Cephalopoda (see cephalopod), Scaphopoda (tusk shells), Aplacophora (Solenogasters), Caudofoveata (sometimes included in the Aplacophora order), Polyplacophora (chitons), and Monoplacophora.
What are the 3 class of mollusk What do they all share how are they each different?
The three main types of mollusks are gastropods, bivalves, and cephalopods. Gastropods, like slugs and snails, can live on land or in the water. Many gastropods have beautiful spiral shells, which make them attractive to seashell hunters.Nov 23, 2021
What are the characteristics of a mollusca?
The organisms belonging to phylum Mollusca exhibit the following characteristics: They are mostly found in marine and freshwater. Very few are terrestrial and found in moist soil. They exhibit organ system level of organization. Their body has a cavity.
What is the study of mollusca called?
The animals belonging to the phylum Mollusca have soft-bodies, triploblastic and bilaterally symmetrical and coelomate. The study of Mollusca is called Malacology. They are sluggish invertebrates, with a thin fleshy envelope or mantle covering the visceral organs.
Why is the blood of an octopus blue?
Octopus has 8 arms and contains no shell. They also possess ink glands for protection. The blood is blue or green in colour due to the presence of a pigment containing copper called haemocyanin.
Which organs are sensory organs?
The nervous system consists of number of paired ganglia and nerves. The tentacles, eyes, osphradium, and statocysts act as the sensory organs.
What is the body of a squid?
Their body has a cavity. The body is divided into head, visceral mass, muscular foot and mantle. The head comprises of tentacles and compound eyes. The body is covered by a calcareous shell. The muscular foot helps in locomotion. They have a well-developed digestive system, the radula is the rasping organ for feeding.
Where are pearls found?
These organisms are found in the terrestrial as well as in deep seas. Their size ranges from microscopic organisms to organisms 20 metres long. They play a very important role in the lives of humans. They are a source of jewellery as well as food. Natural pearls are formed within these molluscs.
What is the largest class of molluscs?
Class Gastropoda. Among molluscs class Gastropoda is by far the largest and most diverse, containing about 40,000 living and 15,000 fossil species. It contains so much diversity that there is no single general term in our language that can apply to them as a whole.
Where do snails live?
Even so, they are widespread, and some have been found at great altitudes and some even in polar regions. Snails occupy all kinds of habitats: in small pools or large bodies of water, in woodlands, in pastures, under rocks, in mosses, on cliffs, in trees, underground, and on the bodies of other animals.
What do conus eat?
Members of the genus Conus (Figure 16-16) feed on fish, worms, and molluscs. Their radula is highly modified for prey capture. A gland charges the radular teeth with a highly toxic venom. When Conus senses the presence of its prey, a single radular tooth slides into position at the tip of the proboscis.
What is the mantle of a girdle?
The mantle forms a girdle around the margin of the plates, and in some species mantle folds cover part or all of the plates. Compared with the primitive condition, the mantle cavity has been extended along the side of the foot, and the gills have been increased in number.
How are pearls cultured?
Pearls are cultured by inserting particles of nacre, usually taken from the shells of freshwater clams, between the shell and mantle of a certain species of oyster and by keeping the oysters in enclosures for several years.
What is a mollusk?
Mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. Along with the insects and vertebrates, it is one of the most diverse groups in the animal kingdom, with nearly 100,000…
What is the most diverse group of animals?
mollusk . Mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. Along with the insects and vertebrates, it is one of the most diverse groups in the animal kingdom, with nearly 100,000…. invertebrate.
What is the largest animal phylum?
insect. Insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. Insects have segmented bodies, jointed legs, and external skeletons (exoskeletons).
What is an encyclopedia editor?
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. ...
What are the three main parts of a mollusk?
The three main parts of a mollusk's body include a muscular foot, a visceral mass, and a mantle. The three main types of mollusks are gastropods, bivalves, and cephalopods. Gastropods, like slugs and snails, can live on land or in the water. Likewise, what are characteristics of phylum Mollusca?
What are the characteristics of the phylum Mollusca?
Likewise, what are characteristics of phylum Mollusca? The animals of this phylum are soft-bodied, non-metameric, triploblastic coelomates and fundamentally bilaterally symmetrical invertebrates with a thin fleshy envelope the mantle, around the visceral (internal organs of the body) which may secrete calcareous shell.