(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
D. (d) None of these
herbivorous
omnivorous
carnivorous
none of these
an exoskeleton
a spiny skin
bilateral symmetry
gastrovascular cavity
movable
immovable
prehensile
all of these
Asterias
Antedon
Echinus
Ophiothrix
Sea star
sea urchin
Sea cucumber
Feather star
synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
tube feet
lobopodia
cephalopodia
rhizopodia
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
Sea cucumber
Brittle star
Feather star
Both (b) and (c)
coelenterates
marine arthropods
echinodermates
sponges
spines
tube feet
integumentary structures
none of these
number of arms
structure of the ambulacral groove
tube feet
pedicellariae
Sea hares
Brittle stars
Star fishes
Sea fish
sea-hares
sea-stars
devil fish
sea fans
sand dollar
sea cucumber
sea flies
sea horse
locomotion
respiration
feeding
all of these
Antedon
Echinocardium
Ophiothrix
Pentaceros
torneria
onchosphere
trochophore
bipinnaria
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
ctenidia
dermal branchiae
book lungs
trachea
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
pluteus
echinopluteus
bipinnaria
auricularia
Starfish
Jellyfish
Cuttlefish
Fresh water mussel
excretion
absorption
reproduction
respiration
Star fish
Sea fan
Ship worm
None of these
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
bipinnaria
glochidium
auralia
echinus
Sea cucumber
Sea lily
Sea urchin
Sea star
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea