lecture 15 Flashcards
what classes make up clade aplacophora
caudofoveata
solenogastres
Aplacophora habitat
they all marine
does aplacophora have shells?
no, lack shell plates, they have pointy calcareous sclerites
are are mfs in clade aplacophora
whatdo they lack
marine worm like burrowers lacking eyes and metanephridia
class caudofoveata characteristics
do not have foot
have radula
class solenogastres
do not hav ctenidia and some lack radula
have small foot
where is foot in solenogastres
in ventral groove
solenogastres how many species
260
caudofoveata # spp
130
what is class polyplacophora
the chitons
how many species polyplacophora
930 spp
where does polyplacophora dwell
they are marine
what type of shell does polyplacophora have
7-8 flat dorsal shell plates
what does polyplacophora mantle bear
spicules
what is the extension of mantle called
girdle
how many pairs of ctenidia in polyplacophores
6-90
where are eyes in polyplacophora
not on head–> poorly developed
on the surface of shell plates there is hundreds of tiny light sensing eyes
how do polyplacophora eat
rasping algae off solid substrate
how are radula teeth strengthened in some polyplacophora species
magnetite
conchifera
where the rest of the molluscs fall
conchifera shells
univalved shell
what clade is class monoplacophora inn
class chonchifera
how many spp monoplacophora
35
monoplacophora shell
single cap like shell
