CHAPTER Flashcards
Vireceral hump / Visceral mass
it is where you will find the soft, non-muscular region which contains the body organ
Give 5 Characteristics of the Phylum Mollusca
- Body of two parts: head-foot and visceral mass
- Bilateral symmetry.
- Coelom reduced to cavities surrounding the heart, nephridia and gonads.
- Open circulatory system in all but one class.
- Radula is usually present and used in scrapping food.
The mollusc’s body wall from which the shell is produced
Mantle
The raspy tongue seen on most mollusk,including snails
Radula
What are the different classificationof Phylum Mollusca (3)
Phyllum Bivalvia
Pyllum Gastropoda
Phyllum Cephalopoda
Have resulted in the evolution of large brains, complex sensory structures, rapid locomotion, grasping tentacles, and tearing mouthparts.
Predatory lifestyle
Rarely make up the major components of any community
Sephalopods
Example of Gastropoda
Snails, slugs, conchs, whelks, periwinkles, abalone, and limpets.
Example of Bivalvia
Clams, oysters, mussels and scallops.
Example of Cephalopods
Squid, octopuses, cuttlefish and nautiluses
Is the second biggest in the animal kingdom
Phylum Mollusca
The largest group in the Phyllum Mollusca
Phyllum Gastropoda
The word “Gastropod” comes from the Greek word?
Stomach foot
The word “Gastropod” comes from the Greek word?
Stomach foot
Used for support and for forward movement
“Foot”
In the snail that moves forward
