Cephalopods
What kind of symmetry do Cephalopods have?
What is Bilateral Symmetry
The class of mollusks that are sessile filter feeder, that always have two shell
What are, Bivalves
All mollusks but cephalopods have this type of blood movement system
What is an Open Circulatory System
A muscular tissue that assists mollusks in movement. (modified as tentacles in octopus)
What is a muscular foot
A feathery organ that the squid uses for respiration is known as a...
What are, gills
How do cephalopods propel themselves through the water?
What is jet propulsion
The name for a mollusk that is univalve - or one piece of shell, that is either coiled or uncoiled
What is, a gastropod
Cephalopods have this kind of blood movement system
What is a Closed Circulatory System
This secretes a shell for some mollusks, and can be a soft layer in protection in squids and octopuses
What is a Mantle
The organ inside the squid that produces ink
What is, Ink sac
What is, 3 total hearts
The shell of a bivalve is made up of this
What is calcium carbonate (limestone)
The term that describes having a distinct head, and sensory organs
What is, Cephalization
A rasping, tongue like feeding structure that is found in most molusks
What is, a radula
The external part of the squid that releases water and allows the squid to move
What is, the siphon
This type of cephalopod is buoyant, due to a series of gas chambers in their shell
What is, a nautilus
A gastropod that has no shell
What is a Slug
This unique group of cephalopods is represented by only one extant species, it survives on marine snow, resides in deep waters, and is named after a fictional monster.
Vampire Squids
Vampyroteuthidae
A free swimming larva of a mollusk is referred to as this
What is, Trochophore
The remains of an internal shell that is in the mantle of the squid
What is, the pen
What are three things cephalopods are able to use for protection against predators?
What are,
Chromatophores
Jet propulsion
Releasing ink
In Bivalves, the siphons have 3 uses. They are...
What is,
Gas Exchange
Filter Feeding
Jet propulsion
In additional to camouflage, cuttlefish use their array of specialized tissues in their skin such as chromatophores, iridophores, etc. for what purpose?
Communication
What percentage of neurons are found outside of the central nervous system of cephalopods?
2/3rds or around 66% on average.
The "freckles" on the external part of the squid that allow it to change colors
What are, chromatophores