Terms in this set (57)
A free swimming, ciliated larva of many worms and mollusks.
A central section of a mollusk's body that contains all the organs
A layer of tissue that covers the body of many invertabrates
The space between the mantle and the body mass in mollusks and branchiopods
A cluster of nerve cells
A rasping, tounge-like organ that is covered with chitinous teeth and that is used for feeding by many mollusks.
A mollusk that has a well developed open head and a flatened foot.
Gastropod means what in english?
The class Gastropod includes?
Snails, Albalones, and Conchs
A fluid that circulates through the body of an animal that has an open circulatory system.
The blood filled space or body cavity of some invertabrates.
An aquatic mollusk that has a shell divided into two halves connected by a hinge.
The class Bivalvia includes?
Clams. Oysters, Or Mussles.
A tube through which water enters the body of a bivalve
A tube through which water exits the mantle cavity of a bivalve
A marine mollusk that has tentacles extending from the head.
Cephalopod in english?
The class Cephalopoda includes?
Octopus, Squid, Cuttle Fish, Or nautilus
Flapped shapped appendages that are used for locomotion or gas exchange.
A sac or pouch that temporarily stores food
A muscular region of the digestion tract that grinds and breaks down food
Infolding of the intestinal wall that increases surface area available for digestion
A muscular blood vessel that links the dorsal and ventral blood vessels.
A tube that eliminates wastes and excess water
Also function as a Kidney
A thick part of the body wall that functions in repoduction
A sac like organ in females that stores sperm.
A carbohydrate that forms part of the exoskeleton
The class Oligochaeta includes?
What does Oligochaeta mean?
The class Polychaeta includes?
The Class Hirudinea includes?
The outer layer of the shell does what?
Protects it against acidic conditions
The middle layer of the shell does?
Makes the shell stronger because it produces a calcium carbonate.
The inner layer of the shell does?
Protects the soft tissues and is shinny and smooth
A marine or fresh water mollusks that have a soft body with plate like gills.
A substance that prevents your blood from clotting
The elimination of waste.
In the Earthworm where is the Cerebral ganglia located?
In the 3rd segment
35-1 #1 What is one advantage of a coelom over a psuedocoelom?
That coelom eliminates the need for a circulatory system.
35-1 #2 What is one feature that is shared by Mollusks and Annelids?
35-1 #3 What is one thing that mollusks lack in the class gastropoda?
They lack a distinct head.
35-1 #4 What is one structure that bivalves dont have?
35-1 #5 How does an Octopus generallyu move?
By crawling along the bottom of the sea with its tentacles
What is the function of the mantle in the snail or a clam?
It acts as a modified lung.
How do Marine Clams reproduce?
They shed sperm and egg cells into the water and fertilization occurs externally.
How do Freshwater clams reproduce?
They reproduce asexually and the fretilization occurs internally.
35-2 #1 Why is segmentation an advantage for the annelid worm?
Because it is accompanied by the dupication of some internal organs.
35-2 #2 What does the contraction of the earthworms muscles do?
Pulls the anterior end forward
35-2 #3 What does an earthworm use its setae for?
To contract in a longitudinal direction.
35-2 #4 What is one differnce between Leeches and Polychaetas?
That Leeches do not have segments