La 23: Echinoderms and Invertebrate chordates

?

digestive gland

crinoids (Crinoidea) are what type of feeders?

suspension feeders

what is the endoskeleton in class Crinoidea made of?

CaCO3

what class is a sea lily?

crinoidea

how does a feather star move?

using projections form the body

5-body part

pentamerous

where do spines project from in a sea star?

ossicles

what does pedicellariae do?

keep skin gills clean

madreporite

entry and exit of water

what side is the mouth in a sea star?

ventral side

what are bumps in skin of sea star called-

dermal branchiae

Brittle stars have voluntary self-amputation what is it called-

autotomy

what class are brittle stars?

ophiuroidea

class of sea cucumber?

holothuroidea

expel part of their digestive trac and reparatory system out of their anus-

eviscerate (sea cucumber)

papulae (skin gills)

folds skin that increases respiration by diffusion

water vascular system functions (echinoderm) ?

• locomotion

• feeding

• respiration

where do suction disk extend from?

ambulacral groove

sea star reproduction ?

asexual and sexual(dioecious)

sea urchins

sea urchins

spines & tube feet with suction discs

sand dollars

spines; tube feet for respiration only

sea lilies are -

sea lilies are-

sessile

feather stars-

feather stars-

swim with arms

subphylum?

Urochordata

phylum- chordata; subphylum: urochordata

tunicates

subphylum?

Cephalochordata

lancelets