Asterias
Antedon
Echinus
Ophiothrix
B. Antedon
tube feet
lobopodia
cephalopodia
rhizopodia
torneria
onchosphere
trochophore
bipinnaria
excretion
absorption
reproduction
respiration
mouth apparatus
exoskeleton
skeletal system
bioluminscent organ
Asterias
Antedon
Echinus
Ophiothrix
Schizocoelic coelom
Water vascular system
Spines in the body mass
Marine habitat
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
parapodia
pseudopodia
setae
tube feet
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
coelenterates
polychaetes
echinodermates
hemichordates
Sea stars
Cake urchins
Sea lilies
Sea cucumbers
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
spines
tube feet
integumentary structures
none of these
locomotion
respiration
feeding
all of these
echinodea
holothuroidea
asteroidea
ophiuroidea
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
Sea cucumber
Sea lily
Sea urchin
Sea star
Ophiothrix
Pentaceros
Antedon
None of these
coelenterates
marine arthropods
echinodermates
sponges
Sea cucumber
Brittle star
Feather star
Both (b) and (c)
pluteus
echinopluteus
bipinnaria
auricularia
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
sand dollar
sea cucumber
sea flies
sea horse
Sea hares
Brittle stars
Star fishes
Sea fish
Antedon
Echinocardium
Ophiothrix
Pentaceros
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
Star fish
Sea fan
Ship worm
None of these
digestive system
water vascular system
canal system
none of these
movable
immovable
prehensile
all of these