The oldest part of a clams shell is the outside part of the hinge. This is because the clam starts at the hinge and grows outwards.
the oldest part of a shell..
The umbo which is located at the anterior end of the clam
The mantle is the newest part of the clam's shell. At the edge of the mantel there is a thicker area of muscle which turns into new shell as the clam grows.
The hinge ligament is attached to the adjacent edges on one side of the two halves of a clam shell. This allows the clam to open and close like a door.
Bivalve mollusks like clams hold their shells closed with their muscular bodies. They also have leathery "hinges" at the rounded part of the shell which help to hold the two halves together. These are similar to ligaments in higher animals. If you ever get a clam in the supermarket that is already open, that one is dead and you should not eat it.
Bivalves are creatures that have a shell of 2 hinged valves like a mollusk, oyster, and clam.
The umbo which is located at the anterior end of the clam
The oldest part of a clam is typically its shell, which can provide information about the age and growth of the clam through the growth rings visible on its surface. The soft body of the clam is regenerated and replaced regularly, so the shell is a more reliable indicator of age.
The oldest part of the clam shell is called the umbo. It is the portion closest to the hinge and is found by following the growth rings to their center.
The mantle is the newest part of the clam's shell. At the edge of the mantel there is a thicker area of muscle which turns into new shell as the clam grows.
A clam shell
Possessive form of the words clam shell: clam shell's
The oldest part of a snail's shell is the center of the coil. When the snail grows, it grows outward
The mantle of a clam protects the clam from sunlight in shelled mollusks, the mantle is the organ that forms the shell, and adds to the shell to increase its size and strength as the animal grows.
This is a bivalve mollusk.
A clam. Or an oyster.
The largest shell belongs to the giant clam, Tridacna gigas, whose shell can grow to several hundred pounds, with a length of about 5 feet.
Clams are generally covered by a shell. It is a part of the clam's body, and it can open or close; when closed, it serves the purpose of protecting the clam from predators.