yes, it is what holds the organs.
a snails has an exoskeleton known as a shell. The shell grows with the snail as it ages.
It is a good example of an exoskeleton.
Yes. Snails do not have a vertebral colum or spine. They have an exoskeleton in the form of their shell.
Snails are invertebrates and have no interior skeletal structure. The snail's outer skin layer, the section called the "mantle" secretes calcium carbonate from which the snail's shell takes form and grows with the snail. The snail shell could be loosely referred to as an exoskeleton as it serves as a retreat and protective housing for the snail's organs.
Molluscs are animals which have no backbone (invertebrates) and no exoskeleton. These include snails (they have an outer shell but it isn't an exoskeleton) slugs (no shell, no exoskeleton, no bones) octopuses (they have no bones. They aren't fish because all fish have bones.) Sea snails and periwinkles are just other types of snail.
sulg is same as snail
Yes, it is the same thing.
The answer to your question might be as simple as a turtle. But an external shell can also be called an exoskeleton. Many animals have exoskeletons like lobsters, grasshoppers, crabs, spiders, and armadillos. You can google "exoskeleton" for many more.
No
The type of plankton that has a shell/exoskeleton is the Squilly.
yes a baby snail will die if it's shell is chipped because a snail shell is very delicate and so is the snail.
yes