digestive system
water vascular system
canal system
none of these
C. canal system
sand dollar
sea cucumber
sea flies
sea horse
Snail
Slug
Nereis
Sea-urchin
Schizocoelic coelom
Water vascular system
Spines in the body mass
Marine habitat
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
ctenidia
dermal branchiae
book lungs
trachea
Ophiothrix
Pentaceros
Antedon
None of these
Sea cucumber
Sea lily
Sea urchin
Sea star
Nervous system with a large brain
Respiratory system
System of internal seleton
Excretory system
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
spines
tube feet
integumentary structures
none of these
movable
immovable
prehensile
all of these
Antedon
Echinocardium
Ophiothrix
Pentaceros
Sea hares
Brittle stars
Star fishes
Sea fish
parapodia
pseudopodia
setae
tube feet
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
coelenterates
marine arthropods
echinodermates
sponges
herbivorous
omnivorous
carnivorous
none of these
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
locomotion
respiration
feeding
all of these
mouth apparatus
exoskeleton
skeletal system
bioluminscent organ
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
Sand dollar
Jelly fish
Silver fish
All of these
pluteus
echinopluteus
bipinnaria
auricularia
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
echinodea
holothuroidea
asteroidea
ophiuroidea
Sea-star
Star fish
Sea-cucumber
Sea lily