Sea cucumber
Brittle star
Feather star
Both (b) and (c)
B. Brittle star
sea-hares
sea-stars
devil fish
sea fans
herbivorous
omnivorous
carnivorous
none of these
Sea-star
Star fish
Sea-cucumber
Sea lily
tube feet
lobopodia
cephalopodia
rhizopodia
sand dollar
sea cucumber
sea flies
sea horse
excretion
absorption
reproduction
respiration
parapodia
pseudopodia
setae
tube feet
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
Star fish
Sea fan
Ship worm
None of these
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
Antedon
Echinocardium
Ophiothrix
Pentaceros
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
Sea star
sea urchin
Sea cucumber
Feather star
Nervous system with a large brain
Respiratory system
System of internal seleton
Excretory system
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
locomotion
respiration
feeding
all of these
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
Ophiothrix
Pentaceros
Antedon
None of these
Asterias
Antedon
Echinus
Ophiothrix
bipinnaria
glochidium
auralia
echinus
Sea cucumber
Sea lily
Sea urchin
Sea star
torneria
onchosphere
trochophore
bipinnaria
coelenterates
marine arthropods
echinodermates
sponges
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
pluteus
echinopluteus
bipinnaria
auricularia
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
movable
immovable
prehensile
all of these
echinodea
holothuroidea
asteroidea
ophiuroidea
Schizocoelic coelom
Water vascular system
Spines in the body mass
Marine habitat
Sea stars
Cake urchins
Sea lilies
Sea cucumbers