Yes, it is the same thing.
yes, it is what holds the organs.
yes
that shell is called the exoskeleton,And the exoskeleton is a shell made out of chitin.The hard exoskeleton of a lobster is known as the chitin.
No, a butterfly does not have an external shell. Instead, it has wings covered in tiny scales that give it color and protection.
They are the same thing.
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.
i think its the same thing as a turtle where the spinal cord is connected to the shell so if you take the shell off in a matter of time it will die.
Yes, both a cockroach's exoskeleton (skin) and human fingernails are made of a protein called chitin. However, the composition and structure of chitin in a cockroach's exoskeleton are different from the keratin in human fingernails.
Hermit crabs need a shell because inside of the their shell is their soft tail or body. It needs it's shell because other hermit crabs can hurt or damage their tail or body that's inside of the shell. Hermit crabs will always be in a shell. The only time when they aren't in a shell is that quick few seconds when they change shells into a bigger one to grow. If your hermit crab is running around without it's shells there is something wrong with your crab. Go to the Mall of America (Nickaloden Universe) what ever you want to call it and ask the person why. I bet he can help you.
They are shellfish, they have an exoskeleton.
False!
Well, with mammals, they have the same organs as humans. Just some mammals have more stomachs then us. Such as a cow, it has three stomachs. With insects, they have an exoskeleton to protect them from predators. It's like their shell. That is all I know!