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Types of Molluscs
Molluscs Characteristics
Annelids Characteristics
Reproduction
Types of Annelids
100
The name of this class of mollusc means "stomach foot", and many have an external shell.
Gastropods
100
What is the radula used for?
Feeding
100
What type of digestive system do annelids have?
A tube-like digestive system.
100
How does the mollusc reproduction allow for the dispersion of their offspring?
They become larvae, allowing them to travel to a different area away from the parent(s)
100
What is an example of a parasitic annelid?
Leeches.
200
The organisms in this class of mollusc often have tentacles.
Cephalopods
200
What kind of symmetry do molluscs have?
Bilateral
200
What kind of skeleton do annelids have?
Hydrostatic skeleton.
200
True or false: Molluscs and annelids can both sexually reproduce.
True.
200
What is a species of annelid that lives mainly on land?
Earthworms.
300
This class of mollusc has a two-pieced, hinged shell.
Bivalves
300
What is the body cavity in molluscs called?
True coelom
300
What are the setae in annelids used for?
Locomotion and protection.
300
Do molluscs or annelids have the ability to regenerate parts of their body?
Annelids.
300
What kind of annelids have spine like structures that are used in defense and locomotion?
Bristle worms.
400
The organisms in this class have a plated shell.
Chitons
400
What are the two major parts of the mollusc body?
The head foot and the visceral mass.
400
What are the two major lifestyles of polychaete worms?
Errant polychaetes are free moving and active, while sedentary polychaetes are sessile.
400
Fertilized eggs of marine annelids develop into what?
Free-swimming larvae.
400
What kind of annelids burrow into the sediment?
Polychaete worms.
500
The organisms in this class are known for their shell like the tusks of an elephant.
Scaphopods
500
Bivalve filter feeders move food into their stomach from what?
Mucus covering their gills.
500
What is a eversible proboscis?
The mouth of a polychaete worm or leech that can be extended by turning inside out.
500
What occurs when errant polychaetes swarm?
Swarming brings sexually mature individuals together, increasing the likelihood for fertilization.
500
What kind of annelid does not have parapodia?
Earthworms.