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Cards In This Set
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What is a synapomorphy of annelids?
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Setae- stiff bristles present on the body.
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The head of an annelid is made up of the ___ and the ____
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Prostomium and peristomium
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The segment of an annelid containing the anus is called the _____?
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Pygidium
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The body of annelids is covered in a nonliving ____ which is secreted by the ____.
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Cuticle, epidermis
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Which parts are not considered metameres?
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The head and pygidium.
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What is metamerism?
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A portion of the nervous and (closed) circulatory systems, allowing it to function relatively independently.
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Metameres are separated by what?
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Septa
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Annelids move by what means?
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Peristaltic contractions
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Annelids have a ___ gut? Some possess ___ to inc surface area?
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Complete, typhlosole
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Excretion is done by ___?
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Metanephridia
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What kinds of sensory structures do annelids possess?
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Ocelli or eyes, chemo and tactile receptors, ventral never cord, ganglia
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How many pairs of hearts?
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Five
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Phylum annelida has 3 sub classes, what are they?
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Polychaeta
oligochaeta
hirudinida
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Oligochaeta and hirudinida can go under what class?
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Clitellata
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Can example of an oligochaete would be a ____. an example of a hirudinid would be a ____.
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Earthworm, leech
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