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A mollusk's exoskeleton is composed of chitin (a component of the exoskeleton of most animals) and conchiolin which is a form of calcium carbonate (present in snail shells). These complex proteins are secreted by the mantle layer present right below the shell and hardens over time as the creature grows.
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∙ 12y ago
Wiki User
∙ 12y agoWiki User
∙ 6y agoThe "nautilus" is a family of hard-shelled cephalopods, notably Nautilus pompilius, or "chambered nautilus".
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∙ 12y agono..... slugs are mollusks and they don't have a shell
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∙ 13y agoa turtle
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What covers mollusks bodys?
Mollusks have soft body and hard shells but some don't even have shells.
Do mollusk have a hard outer shell?
no..... slugs are mollusks and they don't have a shell
Does mollusks protect themselves?
Most of Mollusks protect themselves with help of shell . Shell is hard protective covering made up of CaCO3. Cephalopods are not protected by shell .
What is the name of the hard shell of crabs and toitoises?
The hard shell of a lobster is known as the chitin.
What would a mollusks hard shell help it to do?
Protect against predators trying to eat it.
What time period did hard shell mollusks appear?
545 million years ago
What is the function of the hard external shell in mullucks?
The hard shell protects the very soft body of the mollusk.
Does a crab have an external or external skeleton?
A crab has an external hard shell, and is an invertebrate.
Can a calm have hard external skeleton?
I assume calm means clam? In which case, a clam does have a hard external (skeleton?) shell of calcium carbonate. The shell is known as an exoskeleton.
Is it true that mollusks with a hard outer shell are invertebrates?
Yes, they are invertebrates as they don't have a spine or an internal skeleton.
What order do mollusks belong to?
Mollusks are animals like snail squid clam cuttlefish lamp shell oyster, they are soft bodied and sometimes hard shelled animals.
3 examples of mulluscs?
Mollusc's have a hard outer shell . For example a mollusk would be a snail and there's even more .Here are examples of a mollusks snail , slugs , clams , oysters , squids and octopus . And also not all mollusks have an hard outer shell for example it would be a slug or a squid they both don't have a hard outer shell . This group is a part of the invertebrate theme.
