Mollusks with two shells are called? And also meaning "two shells"
Bivalves
What is the other name for the bivalves?
Pelecypods
All bivalves are grouped together in the class?
Bivalvia.
Mollusks have soft, bilaterally symmetrical bodies composed of? And most have either an?....
Head, food, and coiled visceral mass........ External or internal shell.
True or false
Is that true "bivalve" have "advanced" features such us coelom and brain?
True
The two shells of a bivalve are hinged together at one end and are kept closet by short, though
Adductor muscles
True or false
The clam, oyster and mussels have two adductor muscles and scallop has one
Treu
Where does must clams live?
Intertidal and subtidal zones
We can tell the age of a bivalve by looking at it's shell and it's lines, the lines form bands and each band represents about a year's growth. So, a clam that has four bands would be about?
4 year
This clam is a common bivalve
Mercenaria
Is the oldest clam specimen with 60 years old and weighs more than half a ton
Tridacna gigas or giant clam
How does a bivalve build its shell?
A thing membrane called the?______lines the inside of both shells and protects the internal organs.
Mantle
The bivalve cannot feed if its shells are completely closed, so by what method they feed and breath?
A siphon tube
The siphon tube has two openings? What are those?
Incurrent siphon and excurrent siphon
In the "life activities of bivalves" water that contains food and oxygen enters through the?
Incurrent siphon
In the "life activities of bivalves " wastes products of digestion and respiration are eliminated through the?
Excurrent siphon
Trey or false
Bivalves are NOT filter feeders.
False they are filter feeders
Bivalves breathe through its?
Ciliated cells
Bivalves are adapted to breath underwater by using?
Gill membranes
How does a bivalve filter feed?
Currents of water that contain plakton and debris pass through the siphon tube
True or false
the bivalves has one-way digestive tract
tue
True or False
Bivalves has NOT an open circulatory system
False
they have an open circulatory system
In the "Life Activities of Bivalve" nutrients and Oxygen are transported through their body by a?
colorless blood
This "bivalves" lives in the intertidal zone, where there is constant wave action
Mytilus
Strong or Tough____, which are made up of fibrous protein attach the mussel firmly to rocks and other hard substrates
byssal threads
This "bivalve" lives attach to a substrate and are rough and uneven , even so, Dental scientists are interested in the chemical on this Bivalve.
The oyster (crassostrea)
This "Bivalve" is the fastest for locomotion
The scallop
This two "Bivalves" more quickly through the sand by using their muscular foot as a digging tool
The razor clam
True or false
The bivalves are hermaphrodites
False
they have separates sex
Females release their eggs into the water, where they are fertilized by sperms cells. Which of both partners fertilized the sperm cells?
