Where are the lareral nerves in annelids?
On ventral nerve cord in each segment
T/F Annelids have 5 hearts.
False, they have 5 pairs of hearts.
What are hearts in annelids?
In what system are the ventral and dorsal blood vessels in ann
T/F Annelids have a simple and complete digestive system.
False, they have a complete and complex digestive system
What is the function of the pharynx?
What is the function of the esophagus?
What is the function of the crop?
Describe parapodia and what they are used for?
Paired bristles used for locomotion
What kind of development do polychaetes go through?
T/F Oligochaeta lack parapodia.
T/F Oligochaeta lack eyes.
What are chaetae and setae?
What are inhalant/exhalant siphons and what uses them?
Inhalant siphon allows water to enter, exhalant allows it to exit. It is used by
What mollusks lack a radula and distinct head?
T/F All cephalopoda are active marine predators.
Ribbon worms belong to which phylum?
What environments are ribbon worms found in?
Marine, freshwater, and humid terrestrial habitats
T/F Ribbon worm body plans resemble roundworms.
False, they resemble flatworms
What kind of digestive sys
What are trochopohores?
Free swimming larval stage in marine annelids
Generally are annelids gonochoric or hermaphroditic?
What mode of locomotion do trochopohores use?
What class do oligochaeta and hirudinea belong to?
What 2 class
T/F Annelids consist of segmented and unsegmented worms.
False, consist of segmented worms
Segmentation allows for what 2 things?
Specialization and locomotion
Earthworms and leeches belong to what phylum?
What are polychaetes? What phylum?
What separate segments from each other?
What 3 things are repeated in each segment in an annelid?
Excretory organs, ganglion, lcomotory structures
T/F Sensory organs can be found in any segment in an annelid.
False, found in anterior segments
What is the name of a squid shell?
Describe the larval stage of cephalopods?
They lack a larval stage, they hatch into miniature adults
What class has the largest relative brain size among invertebrates?
T/F Bivalvia have vertebrate like
T/F Earthworms undergo indirect development.
False, they undergo direct development.
What environment are hirudinea generally found in?
What has no parapodia or chaetae?
T/F Hirudinea lack chaetae.
T/F Hirudinea lack parapodia.