What are the four most common and diverse classes of molluscs provide examples of each?
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.
What are 6 mollusks examples?
Class Gastropoda – snails, slugs, limpets, whelks, conchs, periwinkles, etc. Class Bivalvia – clams, oysters, mussels, scallops, cockles, shipworms, etc. The Class Scaphopoda contains about 400 species of molluscs called tooth or tusk shells, all of which are marine.
What class of mollusks is most diverse?
There are three main groups of mollusks. Snails ( Gastropoda ) are the most diverse group, there are tens of thousands of species. Nearly all snails grow a spiral shell that is all one piece.
What are the main examples of molluscs?
clams, mussels, oysters, and scallops (class Bivalvia)
- ark shell (family Arcidae)
- cockles (family Cardiidae)
- coquina clam (genus Donax)
- gaper clams (Tresus nuttallii and Tresus capax)
- geoduck (Panopea generosa)
- jingle shells (family Anomiidae)
- mussels (families Mytilidae and Unionidae)
- genus Nuculana.
Are jellyfish molluscs?
Ans: Phylum mollusca include soft bodied animals with hard shell Eg: snails, octopus, mussels, oysters. Phylum Coelenterata contain special structure called coelenteron where the food digested.It include jelly fish and sea anemones.
Which of the following represent classes of mollusks?
he phylum Mollusca is divided into five main classes: pelecypods, or bivalves (Pelecypoda, or Bivalvia), includes oysters, clams, mussels; gastropods (Gastropoda), snails, sea slugs; cephalopods (Cephalopoda), squids, octopuses; scaphopods (Scaphopoda), tooth shells; Polyplacophora, chitons.
What are two examples from the mollusk phylum?
Examples
- Clams.
- Mussels.
- Octopus.
- Pila ( Snail)
- Oyster.
- Cuttlefish.
- Squid.
Is a sponge an arthropod?
Arthropods are invertebrates with hard outer shells (exoskeletons), with jointed legs, and with segmented bodies. Since about 75% of all animal species are arthropods, they represent the largest invertebrate group. Sponges are the simplest of all animals.
Are starfish mollusks?
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.
Is octopus a mollusk?
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.
Which is an example of a Mollusca animal?
Mollusca Examples. Following are a few examples of the animals belonging to phylum Mollusca: Pila (Apple snail) Limax (Slug) Unio (Freshwater mussel) Turbinella (Shankha) Helix (Garden snail) Octopus (Devilfish) Loligo (Squid)
How many species of molluscs are there in the world?
One Shell of a Phylum. Consisting of more than 85,000 extant species, Mollusca is the second biggest phylum in the animal kingdom, second to only Arthropods. Ten total classes of Molluscs have existed throughout evolutionary history, but only eight of these classes exist today.
How are bivalve molluscs used in the marine environment?
The bivalve molluscs are used as bioindicators in the marine and freshwater environments. But few of them such as snails and slugs are pests. The organisms belonging to phylum Mollusca exhibit the following characteristics:
What kind of habitat do most mollusks live in?
The majority of mollusks include benthic sea mollusks, which means that they live on seabeds. Many others are terrestrial, like snails. The great diversity that exists within the phylum Mollusca have colonized a multitude of different habitats and, therefore, feeding depends largely on the species and their environment.