Sea stars
Cake urchins
Sea lilies
Sea cucumbers
C. Sea lilies
Sea stars
Cake urchins
Sea lilies
Sea cucumbers
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
digestive system
water vascular system
canal system
none of these
herbivorous
omnivorous
carnivorous
none of these
ctenidia
dermal branchiae
book lungs
trachea
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
spines
tube feet
integumentary structures
none of these
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
torneria
onchosphere
trochophore
bipinnaria
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
sand dollar
sea cucumber
sea flies
sea horse
Sea star
sea urchin
Sea cucumber
Feather star
A fresh water echinoderm
An ancient Greak ship lantern shaped structure connected with balancing system of seal lily
A masticatory apparatus connected with digestive system in sea urchin
A seive plate connected with ambulacral system in sea star
locomotion
respiration
feeding
all of these
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
tube feet
lobopodia
cephalopodia
rhizopodia
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
coelenterates
marine arthropods
echinodermates
sponges
synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
excretion
absorption
reproduction
respiration
Sand dollar
Jelly fish
Silver fish
All of these
parapodia
pseudopodia
setae
tube feet
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
coelenterates
polychaetes
echinodermates
hemichordates
Sea hares
Brittle stars
Star fishes
Sea fish
Asterias
Antedon
Echinus
Ophiothrix
echinodea
holothuroidea
asteroidea
ophiuroidea