polypoid
medusoid
polymorphic
hydroid
B. medusoid
Aurelia
Sea anemone
Obelia
Hydra
polypoid
medusoid
polymorphic
hydroid
nerve cells
sensory cells
muscle fibres
no cells
Hydra
Obelia
Monkey
Elephant
coenosarc of Obelia
perisarc of Obelia
body wall of Sea anemone
umbrella of Aurelia
coelom
enterocoel
pseudocoel
coelenteron
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
sensory cells
nerve cells
interstitial cells
all of these
sponges
coelenterates
annelids
arthropods
saprozoic
herbivorous
insectivorous
carnivorous
bilateral symmetry
radial symmetry
asymmetry
spherical symmetry
hydrozoa
scyphozoa
anthozoa
all the three
single testis and many ovaries
single ovary and many testes
one testis and one ovary
many testes and many ovaries
Fungia
Hydra
Meandria
Tubipora
hydrula
planula
tadpole
amphiblastula
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Zoochlorella
Chlamydomonas
Euglena
None of these
several types of organ-systems in an individual
different kinds of larval forms in the life history of an animal
different functions performed by a single kind of organism
several different types of individuals in a species
stirring up the digestive fluid in the digestive cavity
engulfing food particles
engulfing semi-digested particles inside food- absorbing cells
none of these
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
Aurelia
Metridium
Physalia
Tubipora
Hydra
Aleyonium
Aurelia
Physalia
epidermis alone
gastrodermis alone
both (a) and (b)
(a), (b) and tentacles
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
mouth only
mouth and anus
large number of pores in the body wall
both (b) and (c)
prefers weak light
moves away from strong light
avoids chlorinated water
moves to water of low temperature
Earthworm
Hydra
Amoeba
Cockroach
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 parts die
both parts make up the loss and form two new individuals
both parts live independently as they are
none of these
bacteria
water fleas
tadpoles
fishes