Mollusk Crossword

one of the two regions of the mollusk body consisting of the head and the foot
area beneath the mantle of a mollusk that contains the internal organs
a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell
organs that exchange oxygen and carbon dioxide with water
hard outer covering or case of certain organisms such as arthropods and turtles
the outer layer of a bivalve, consists of concholin
the middle layer of the mollusk shell, composed of calcium carbonate
CaCO3 laid down over a thin protein matrix; secreted continuously so it becomes thicker over time
an organ covered with teeth that mollusks use to scrape food into their mouths
system in which blood is not always contained within a network of blood vessels
a type of excretory gland or nephridium found in many types of invertebrates such as Annelids, Arthropods and Molluscs. It typically consists of a ciliated funnel opening into the body cavity or coelom connected to a duct which may be variously glandularized, folded or expanded and which typically opens to the organism's exterior.
a distinctive type of larva
a twisting force
a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
oldest part of the shell of a bivalve from which the shell grows
tubelike structure through which water enters and leaves a mollusk's body
pigment cells that change the color of an organism, allowing it to camouflage
an arm of adult males used to pluck a spermatophore from his own mantle cavity and insert into a female's mantle cavity
gelatinous rod that projects into the stomach; the rotating of the style frees digestive enzymes and rolls the food mass
concentric layers of bony connective tissue