coelenterates
polychaetes
echinodermates
hemichordates
Sea star
sea urchin
Sea cucumber
Feather star
coelenterates
marine arthropods
echinodermates
sponges
parapodia
pseudopodia
setae
tube feet
sand dollar
sea cucumber
sea flies
sea horse
digestive system
water vascular system
canal system
none of these
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
herbivorous
omnivorous
carnivorous
none of these
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
Schizocoelic coelom
Water vascular system
Spines in the body mass
Marine habitat
spines
tube feet
integumentary structures
none of these
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
haemal system
digestive system
ambulacral system
reproductive system
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
ctenidia
dermal branchiae
book lungs
trachea
Nervous system with a large brain
Respiratory system
System of internal seleton
Excretory system
Sand dollar
Jelly fish
Silver fish
All of these
Snail
Slug
Nereis
Sea-urchin
Star fish
Sea fan
Ship worm
None of these
excretion
absorption
reproduction
respiration
pluteus
echinopluteus
bipinnaria
auricularia
Ophiothrix
Pentaceros
Antedon
None of these
sea-hares
sea-stars
devil fish
sea fans
synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
mouth apparatus
exoskeleton
skeletal system
bioluminscent organ
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
Sea hares
Brittle stars
Star fishes
Sea fish