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Animals without shells are called invertebrates?
animals without backbones are invertebrates. octopi and squids have no shells, but are invertebrates because they contain no backbone. if they had a backbone, they'd be vertebrates.
Do invertebrates without bones have something rigid for their muscles to pull against?
Many invertebrates have shells or exoskeletons which can be used to anchor muscles.
What are external invertebrates?
bugs with shells bugs with shells
What are molluscs?
Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell and including the edible shellfish and the snails.
Why are shells important to some invertebrates groups?
shells are important to some invertebrates groups because for some of them, that's their home
What are mullusks?
Invertebrate having a soft unsegmented body usually enclosed in a shell.
What are the seven groups of invertebrates?
They are:Sponges (Porifera)Comb jellies (Ctenophora)Hydras, jellyfishes, sea anemones, and corals (Cnidaria)Starfishes, sea urchins, sea cucumbers (Echinodermata)Flatworms (Platyhelminthes)Round or threadworms (Nematoda)Earthworms and leeches (Annelida)
Is a barnacle a vertebrates invertebrates?
Barnacles are invertebrates because their shells are outside of their body - they do not have an internal skeleton with a backbone.
Is a giant clam a vertebrates invertebrates?
Mollusks are all invertebrates because they have no internal skeleton with a backbone. Their shells are outside of their body.
Are snail vertebrates on invertebrates?
Yes because they do not have a backbone, they have shells, instead.
Animals with shells on their bodies?
Arthropods are defined to be invertebrates that have an exoskeleton ( an external skeleton).
Are mollusks soft bodie invertebrates that typically have inner or outer shells?
MOLLUSK
