coelenterates
marine arthropods
echinodermates
sponges
D. sponges
spines
tube feet
integumentary structures
none of these
Star fish
Sea fan
Ship worm
None of these
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
bipinnaria
glochidium
auralia
echinus
Sea stars
Cake urchins
Sea lilies
Sea cucumbers
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
pluteus
echinopluteus
bipinnaria
auricularia
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
Sea cucumber
Brittle star
Feather star
Both (b) and (c)
Sea star
sea urchin
Sea cucumber
Feather star
digestive system
water vascular system
canal system
none of these
parapodia
pseudopodia
setae
tube feet
sand dollar
sea cucumber
sea flies
sea horse
Sand dollar
Jelly fish
Silver fish
All of these
coelenterates
polychaetes
echinodermates
hemichordates
echinodea
holothuroidea
asteroidea
ophiuroidea
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
sea-hares
sea-stars
devil fish
sea fans
Snail
Slug
Nereis
Sea-urchin
herbivorous
omnivorous
carnivorous
none of these
movable
immovable
prehensile
all of these
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
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
ctenidia
dermal branchiae
book lungs
trachea
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
Sea-star
Star fish
Sea-cucumber
Sea lily
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
Sea cucumber
Sea lily
Sea urchin
Sea star