pluteus
echinopluteus
bipinnaria
auricularia
B. echinopluteus
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
coelenterates
marine arthropods
echinodermates
sponges
locomotion
respiration
feeding
all of these
Sea cucumber
Brittle star
Feather star
Both (b) and (c)
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
Ophiothrix
Pentaceros
Antedon
None of these
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
herbivorous
omnivorous
carnivorous
none of these
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
Sea stars
Cake urchins
Sea lilies
Sea cucumbers
digestive system
water vascular system
canal system
none of these
sand dollar
sea cucumber
sea flies
sea horse
sea-hares
sea-stars
devil fish
sea fans
mouth apparatus
exoskeleton
skeletal system
bioluminscent organ
ctenidia
dermal branchiae
book lungs
trachea
excretion
absorption
reproduction
respiration
torneria
onchosphere
trochophore
bipinnaria
Star fish
Sea fan
Ship worm
None of these
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
parapodia
pseudopodia
setae
tube feet
bipinnaria
glochidium
auralia
echinus
Sea hares
Brittle stars
Star fishes
Sea fish
spines
tube feet
integumentary structures
none of these
coelenterates
polychaetes
echinodermates
hemichordates
Sea star
sea urchin
Sea cucumber
Feather star
echinodea
holothuroidea
asteroidea
ophiuroidea
Sea-star
Star fish
Sea-cucumber
Sea lily
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
pluteus
echinopluteus
bipinnaria
auricularia
Asterias
Antedon
Echinus
Ophiothrix