nerve cells
sensory cells
muscle fibres
no cells
D. no cells
battery of nematocysts
group of nematocysts
armed thread
none of these
porifera
coelentrata
annelida
platyhelminthes
Hydra
Obelia
Monkey
Elephant
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
sponges
coelenterates
annelids
arthropods
Hydra
Obelia
Physalia
Acerelia
Hydra
Aleyonium
Aurelia
Physalia
hydrozoa
scyphozoa
anthozoa
all the three
bacteria
water fleas
tadpoles
fishes
Zoochlorella
Chlamydomonas
Euglena
None of these
mesoglea
general surface
pellicle
gastrodermis
Tubipora
Astrangia
Meandra
Aeropora
Fungia
Hydra
Meandria
Tubipora
Metabolism
Metamerism
Melting
Metamorphosis
toxin
venom
hypnotoxin
haematin
nerve cells
sensory cells
muscle fibres
no cells
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
steptoline or atrichous
streptoline or holotrichous
volvent or desmonemes
penetrant or stenoteles
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
somersaulting
contracting a part or whole of its body
walking away
looping
non-cellular and jelly like material
cellular jelly like material containing sensory cells
cellular jelly like material containing nerve cells
both (a) and (c)
below the ovaries
below the tentacles
further down the tentacles to occupy central position of the body
anywhere on the body between tentacles and adhesive disc
Both show polymorphism
Both possess a larval stage in their life history called planula
Both are found in fresh water
Both havb a jelly like mesoglea with no cells
cataching prey
paralysing prey
testing the food
testing the water
Tubularia
Obelia
Hydra
Physalia
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
coelom
enterocoel
pseudocoel
coelenteron
both parts die
both parts make up the loss and form two new individuals
both parts live independently as they are
none of these
locomotion
food capturing
locomotion and food capturing
respiration