Animalscaretips
Classification
| 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† |
- How are mollusks divided into classes?
- What are the three classes of mollusks?
- What are the 5 main classes of Mollusca?
- What are the 3 class of mollusk What do they all share how are they each different?
- Is Mollusca a bilateral symmetry?
- What is Mollusca Kingdom?
- Which class of molluscs are the largest group?
- Which class of mollusks include organisms that have two shells?
- Which of the following belong to phylum Mollusca?
- Is a scallop a cephalopod?
- How many species of mollusks are there?
- Which class of mollusks is the only class with some terrestrial species?
- Which phylum does the bivalve belong to?
- Why is an octopus classified under Mollusca and not under Arthropoda?
How are mollusks divided into classes?
Mollusks are subdivided into seven classes with most species found in three of those classes: Gastropoda, Bivalvia, and Cephalopoda. Gastropods make up the largest class of mollusks, and they include both snails and slugs. ... The remaining classes (Polyplacophora, Aplacophora, and Monoplacophora) have fewer species.
What are the three classes of mollusks?
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 are the 5 main classes of 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) ...
What are the 3 class of mollusk What do they all share how are they each different?
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.
Is Mollusca a bilateral symmetry?
Mollusca can be found in freshwater, marine and terrestrial habitats. More features of molluscs include bilateral symmetry, soft or unsegmented bodies, respiration via ctenidium, ganglia/nerve comprised nervous system, haemocoel body cavity, etc.
What is Mollusca Kingdom?
The phylum Mollusca is the second-largest animal phylum, with over 100,000 species. 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).
Which class of molluscs are the largest group?
Gastropods are by far the largest class of molluscs, comprising over 80% of all molluscs.
Which class of mollusks include organisms that have two shells?
Class Bivalvia (“two shells”) includes clams, oysters, mussels, scallops, and geoducks. Members of this class are found in marine as well as freshwater habitats.
Which of the following belong to phylum Mollusca?
The animals belonging to the phylum Mollusca are apple snail, pearl oyster, devil fish, tusk shell, etc.
Is a scallop a cephalopod?
The mollusks that have a hinged, two-part shell joined by strong muscles are called bivalves. Clams, Oysters, and Scallops are bivalve mollusks and are a familiar food source. These three animals pull their shells closed by contracting powerful muscles near the hinge.
How many species of mollusks are there?
The molluscs (also called mollusks) compose the large phylum of invertebrate animals known as the Mollusca. Around 85,000 extant species of molluscs are recognized.
Which class of mollusks is the only class with some terrestrial species?
Loss of the shell has taken place many times in different groups that are not evolutionarily closely related, and land snails and slugs are most often treated together as a single group in specialized malacological literature. All terrestrial molluscs belong to the class Gastropoda.
Which phylum does the bivalve belong to?
Clams, mussels, oysters, and scallops are members to the class Bivalvia (or Pelecypodia).
Why is an octopus classified under Mollusca and not under Arthropoda?
Answer: Octopuses can camouflage very well in their surroundings. They have ink glands that they use to defend themselves or escape from predators. They show all the characteristic features of Phylum Mollusca and are triploblastic, bilaterally symmetrical, and found in various regions of the ocean.
