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Science Structure and Function sheet
Terms in this set (20)
STRUCTURE: Contains primarily calcium; covers the entire oyster body; Wide part is the bill; Narrow part is the Umbo.
FUNCTION: Protects the oyster.
STRUCTURE: Small sensory organs attached to the edge of the mantle.
FUNCTION: They are used for the detection of environmental stimuli. The tentacles are highly sensitive to changes in light; they contract if a shadow passes in front of a feeding oyster, or a beam of light is focused on them.
STRUCTURE: Largest organ in oyster's body. Made of 4 folds of tissue.
FUNCTION: Mantle and gills are chief respiratory organs. The gills trap nutrients from water and move the food particles to the labial palps for further sorting. The gills also capture dissolved oxygen. That is how oysters breathe. Gills also serve to separate masses of eggs released from the ovary during spawning into individual ova for efficient fertilization.
STRUCTURE: The inverted U-shaped slit located between the inner and outer labial palps.
FUNCTION: Takes in food.
STRUCTURE: Two large flaps that are triangular in shape. One side is rough and the other is smooth.
FUNCTION: Along with the gills they control the amount of food ingested.
Circulatory fluid found in all mollusks and many other invertebrates or oyster blood.
STRUCTURE: A funnel- shaped tube.
FUNCTION: It acts as a passageway for food. It connects to mouth and stomach.
STRUCTURE: A large sac-like organ. It is divided into two chambers.
FUNCTION: Sorts food particles. Uses enzymes to break down food for digestion. After digestion the nutrients are absorbed then it sends food particles to the intestine and rectum.
STRUCTURE: Continuation of the intestine. Runs over the adductor muscle and ends/empties into the anus.
FUNCTION: Absorbs water and consolidates wastes.
STRUCTURE: An opening at the end of the alimentary canal or rectum.
FUNCTION: It releases waste into the environment.
STRUCTURE: A two chambered organ located under the adductor muscle.
FUNCTION: The heart pumps colorless blood throughout an oyster's body. It is called an open circulatory system, meaning it has no veins or arteries.
STRUCTURE: A prominent organ situated in the back region of the oyster body. Made of translucent whitish crescent-shaped material.
FUNCTION: It function to close the oyster shell( relaxation of the adductor muscle allows the shells to gape open).
STRUCTURE: Two folds of tissue that cover all of the organs.
FUNCTION: Part of the respiratory system.
The Eastern Oyster
An invertebrate with a soft unsegmented body. Most are protected by a hard shell.
A collection of inter-related parts that are organized to form an organism.
The function of something pertains to what it does or what it is used for.
What is a System?
A system is a group of organs that work together to carry out a particular task.
What is a cell?
The basic unit that makes up all living things. Includes, Animals, plants, fungi etc.
Contains: Mouth, Labial Palps, esophogus, stomach, digestive gland, intestine, rectum and anus.
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