number of arms
structure of the ambulacral groove
tube feet
pedicellariae
B. structure of the ambulacral groove
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
Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies
redia and cercaria
bipinnaria and brachiolaria
trochophore and aurecularia
none of these
(a) Starfish
(b) Brittle star
(c) Sea lily
(d) None of these
herbivorous
omnivorous
carnivorous
none of these
coelenterates
polychaetes
echinodermates
hemichordates
Asterias
Antedon
Echinus
Ophiothrix
bipinnaria
glochidium
auralia
echinus
Asteroidea
Crinoidea
Ophiuroidea
Holothuroidea
torneria
onchosphere
trochophore
bipinnaria
haemal system
digestive system
ambulacral system
reproductive system
digestive system
water vascular system
canal system
none of these
Sand dollar
Jelly fish
Silver fish
All of these
Snail
Slug
Nereis
Sea-urchin
Nervous system with a large brain
Respiratory system
System of internal seleton
Excretory system
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
Antedon
Echinocardium
Ophiothrix
Pentaceros
parapodia
pseudopodia
setae
tube feet
spines
tube feet
integumentary structures
none of these
Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea
Ophiothrix
Pentaceros
Antedon
None of these
tube feet
lobopodia
cephalopodia
rhizopodia
sea-hares
sea-stars
devil fish
sea fans
excretion
absorption
reproduction
respiration
ctenidia
dermal branchiae
book lungs
trachea
Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)
Sea hares
Brittle stars
Star fishes
Sea fish
sand dollar
sea cucumber
sea flies
sea horse
synapta and antedon
astrias and asterina
ophiothrix and ophioderma
all of these
Sea cucumber
Sea lily
Sea urchin
Sea star