What part of a mollusk contains calcium carbonate?
In many species of molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell.
Do mollusks have calcium carbonate?
As mollusks develop in the sea, their mantle tissue absorbs salt and chemicals. They secrete calcium carbonate, which hardens on the outside of their bodies, creating a hard shell.
What structure is found in the mollusk?
Mollusks have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body. Most mollusks have tentacles for feeding and sensing, and many have a muscular foot. Mollusks also have a coelom, a complete digestive system, and specialized organs for excretion.
What are mollusc shells made of?
The mineral part of the molluscan shell is typically made entirely of calcium carbonate, in particular, calcite and/or aragonite.
What is the structure of the clam?
Clams are marine mollusks with two valves or shells. Like all mollusks, a clam has a mantle which surrounds its soft body. It also has a muscular foot which enables the clam to burrow itself in mud or sand. The soft tissue above the foot is called the visceral mass and contains the clam’s body organs.
Which of the following structures secretes the calcium carbonate of the shell in a mollusk?
A mantle, a highly modified epidermis that covers and protects the soft body. In most species, the mantle also secretes a shell of calcium carbonate.
What is calcium carbonate compound?
Calcium carbonate
Calcium carbonate/IUPAC ID
Why do some mollusk have shells?
Mollusks often have a hard outer shell to protect their bodies. All mollusks have a thin layer of tissue called a mantle which covers their internal organs. The mantle produces the mollusk’s shell.
What makes a mollusk a mollusk?
Mollusks are a large group of invertebrate animals. Mollusks have soft bodies, and their bodies are not divided into rings like the segmented worms called annelids . Mollusks don’t have legs, though some have flexible tentacles for sensing their environment or grabbing things.
What makes a mollusc a mollusc?
Molluscs are soft bodied, unsegmented animals, with a body organized into a muscular foot, a head, a visceral mass containing most of the organ systems, and a fleshy mantle which secretes the calcareous shell.
What structure secretes the shell of the clam?
The mantle, a thin membrane surrounding the body of the clam, secretes the shell. The oldest part of the clam shell is the umbo, and it is from the hinge area that the clam extends as it grows.
