Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
Correct Answer :
D. Physalia
Related Questions
What is common between Hydra and Obelia ?
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
Coelenteron in Hydra serves the purpose of
digestion and circulation
digestion and storage
excretion and digestion
circulation and storage
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Hydra reproduces by gemmation (budding) when
Plenty of food is present
Pond dries up
Water becomes muddy
Hydra is alone
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
If nematocysts are absent in Hydra, which is affected
Locomotion
Predation
Both (a) and (b)
Reproduction
Ephyra is the larval form of
Sea anemone
Aurelia
Obelia
Hydra
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Body wall of coelentrates is described as
diploblastic
integument
multicellular
triploblastic
In jelly fishes, the adult is always
polypoid
medusoid
polymorphic
hydroid
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
In Hydra, buds always arise at
the hypostome
the junction of hypostome and stomach
in junction of stomach and stalk
the stomach
In Hydra, the physiological division of labour is exhibited by
cellular layers
tissues
cell differentiation
organs
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
all of these
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
Hydra has no special structure for
attachment
respiration
food capturing
offense
Coral reef formation is mainly related to
sponges
anthozoans
molluscs
hydrozoans
Nematocysts of Hydra are important for
cataching prey
paralysing prey
testing the food
testing the water
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
The number of tentacles in Hydra is
24
610
1040
4050
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
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