Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
Correct Answer :
C. fresh water, radial, symmetrical and diploblastic
Related Questions
In Hydra, the physiological division of labour is exhibited by
cellular layers
tissues
cell differentiation
organs
Digestion in Hydra is
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
Hydra has no special structure for
attachment
respiration
food capturing
offense
Coelenteron in Hydra serves the purpose of
digestion and circulation
digestion and storage
excretion and digestion
circulation and storage
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
Hydra respires through
mesoglea
general surface
pellicle
gastrodermis
A coelentrate, commonly known as fresh water polyp is
Hydra
Obelia
Physalia
Acerelia
Rhopalia are the sense organs in medusa belonging to the class
hydrozoa
scyphozoa
actinozoa
all of these
Ctenophores differ form cnidorians in one important aspect, that is
absence of musculoepithelial cells in the body wall
absence of nematocysts
absence of sensory cells
absence of sexual reproduction
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
all of these
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
The nematocysts which are mainly used for defense and offense and which tightly coil around the prey are
steptoline or atrichous
streptoline or holotrichous
volvent or desmonemes
penetrant or stenoteles
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
If a Hydra is cut into two pieces, it is noted that
both parts die
both parts make up the loss and form two new individuals
both parts live independently as they are
none of these
The tentacles of Hydra are
pinnate
hollow
solid
frilled
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Cindom is a
battery of nematocysts
group of nematocysts
armed thread
none of these
Communication between the enteron and exterior in coelentrates is through
mouth only
mouth and anus
large number of pores in the body wall
both (b) and (c)
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Polymorphic coelentrates are the members of the class
hydrozoa
scyphozoa
actinozoa
all of these
In Hydra, buds always arise at
the hypostome
the junction of hypostome and stomach
in junction of stomach and stalk
the stomach
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
The flagella of food-absorbing cells in hydra aid in
stirring up the digestive fluid in the digestive cavity
engulfing food particles
engulfing semi-digested particles inside food- absorbing cells
none of these
Musculo-glandular cells are found in hydra
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
The number of tentacles in Hydra is
24
610
1040
4050
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
A piece of Hydra will regenerate into a full Hydra if it contains a part of
epidermis alone
gastrodermis alone
both (a) and (b)
(a), (b) and tentacles
Brain coral is
Fungia
Hydra
Meandria
Tubipora
Hydra reproduces by budding when
plenty of food is present
pond is going dry
Hydra is alone
water becomes muddy