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Molluscs & Echidnoderms
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Is the echidna an echinoderm?
No
Name an example of a holothuroid echinoderm
Sea cucumber
Name an example of an asteroid echinoderm
Starfish
What type of symmetry does a starfish have?
Pentaradial
Sea lilies are which type of echinoderm?
Crinoids
A sea cucumber is which type of echinoderm?
Holothuroid
The brittle star is which type of echinoderm?
Ophiuroids
The sea urchin is which type of echinoderm?
Echinoid
The starfish is which type of echinoderm?
Asteroid
Which mollusc group does a squid belong to?
Cephalopod
Which mollusc group does an octopus belong to?
Cephalopod
Which mollusc group does a snail belong to?
Gastropod
Which mollusc group does a scallop belong to?
Bivalve
Which mollusc group does a clam belong to?
Bivalve
What 4 body parts do molluscs have?
A head, a muscular foot, a visceral mass, and the mantle
How does the water vascular system work?
The water vascular system is made up of tubes that fill with water to move the tube feet.
How does an echidnoderm move?
Using a water vascular system
Are echidnoderms oviparous, viviparous, or ovoviviparous?
Oviparous
Echidnoderms have ______ reproduction
Sexual
Are echidnoderms vertebrates or invertebrates?
Invertebrates
Are molluscs invertebrates or vertebrates?
Invertebrates
Echidnoderms have ____ symmetry.
Radial
Describe the shell of a cephalopod.
Most of the shell is missing, or is internal and underdeveloped
What shape of shell do bivalves have?
A shell with two halves
What shape of shell do gastropods have?
Spiral
Name the 3 groups of molluscs.
Bivalves, gastropods, cephalopods
Molluscs have ________ reproduction.
Sexual
Molluscs have ______ symmetry.
Bilateral
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