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What is the only cephalopod that has retained an external shell?
Wiki User
∙ 13y ago
The only extant cephalopod that produces an external shell is the chambered nautilus. The shells produced by squid and cuttlefish are internal.
Wiki User
∙ 15y ago
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The nautilus is the only living cephalopod with?
A chambered shell
Which is the only living cephalopod species which still has an outer shell?
cuttle fish
Is a squid a cephalopod?
Yes, an octopus is an cephalopod which means head foot. Other cephalopods include cuttlefish, squid, and an nautilus which is the only cephalopod that still carries a shell.
What is the difference between the red 3DS and the blue 3DS?
The only difference is the colour of the external shell.
How many electrons do alkali metals have on there auter shell how does this affect the properties of a metal?
Alkali metal have only one electron on the external shell; the are very reactive and form cations.
Are squids mammals?
No - squids and reptiles belong in completely different groups of the animal kingdom. Squid, cuttlefish, and octopus belong to a phylum called cephalopod mollusks.
What are the possible causes fo retained earnings?
only PROFIT WHICH IS RETAINED IN THE BUSINESS
What type of skeloton do squid have?
A squid is a cephalopod, and has no skeleton at all. The only hard part of a squid is its beak.
Are all octopus edible?
Yes. The only known cephalopod with poisonous flesh is the flamboyant cuttlefish.
Are slugs and snails related?
no;snails have shells, Slugs do not!more specifically snails are almost all members of the molluscan class Gastropoda with a external shell. Slugs on the other hand are also all member of the molluscan class gastropoda, but do not have an external shell rather an internal shell.
Which phyla developed an external shell to protect its internal organs?
Molluscaanswer 2 Well, we do not know that the Molluscal developed the shell to protect its internal organs, we only know that by developing an external shell, that did protect its internal organs.But the shell gave it more than that. The animal now had a frame onto which it could anchor its organs, and thus use superior locomotion or feeding. And in our human case, a skeleton that enables and protects all sorts of things.The shell was not an essential for protection; for ordinary garden snails, and squids and octopuses [[one puss, 2 puses in English] have all let their shell degenerate to a minor internal feature.
Can there be 4 electrons in the first energy shell?
no only 2 in the first shell, 8 in every other shell
