synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
C. ophiothrix and ophioderma
torneria
onchosphere
trochophore
bipinnaria
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
Sea-star
Star fish
Sea-cucumber
Sea lily
Sea cucumber
Sea lily
Sea urchin
Sea star
Asterias
Antedon
Echinus
Ophiothrix
coelenterates
polychaetes
echinodermates
hemichordates
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
Nervous system with a large brain
Respiratory system
System of internal seleton
Excretory system
herbivorous
omnivorous
carnivorous
none of these
digestive system
water vascular system
canal system
none of these
parapodia
pseudopodia
setae
tube feet
tube feet
lobopodia
cephalopodia
rhizopodia
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
Schizocoelic coelom
Water vascular system
Spines in the body mass
Marine habitat
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
Sea cucumber
Brittle star
Feather star
Both (b) and (c)
bipinnaria
glochidium
auralia
echinus
excretion
absorption
reproduction
respiration
Star fish
Sea fan
Ship worm
None of these
Sea stars
Cake urchins
Sea lilies
Sea cucumbers
Ophiothrix
Pentaceros
Antedon
None of these
ctenidia
dermal branchiae
book lungs
trachea
locomotion
respiration
feeding
all of these
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
sand dollar
sea cucumber
sea flies
sea horse
Antedon
Echinocardium
Ophiothrix
Pentaceros
pluteus
echinopluteus
bipinnaria
auricularia
Sand dollar
Jelly fish
Silver fish
All of these