Cephalopods such as octopuses, squid, and cuttlefish do not have shells. They have evolved with a reduced internal or external shell, or in some cases, no shell at all. This allows for greater agility and flexibility in movement.
A periwinkle shell provides protection and support for the periwinkle snail. It is made of calcium carbonate and helps the snail retain moisture and regulate its internal environment.
The membrane that surrounds the internal organs of mollusks is called the mantle. This tissue not only encloses the internal organs but also plays a crucial role in producing the mollusk's shell, if present. The mantle cavity, formed by the mantle, houses gills or lungs, facilitating respiration and excretion. Additionally, it is involved in the secretion of substances that help in shell formation and protection.
The outer shell of a rocket is called the rocket's body or fuselage. It is designed to protect the rocket's internal components and payload from the harsh environment of space.
The dorsal carapace (top shell) and ventral plastron (bottom shell) can be found on the exterior of a turtle's body. The carapace covers the turtle's back and the plastron covers its underside, providing protection and support for the turtle's internal organs.
A Cuttle Shuttle.
cuttle fish
fishs eddy
No
The function of a shell is to protect an organism's internal organs.
cuttle fish is not a vertabrate. its an invertebrate.
G. Cuttle has written: 'Executive programs and operating systems'
gladius
the pen
The pen
yes
yes