A coelentrate, commonly known as fresh water polyp is
Hydra
Obelia
Physalia
Acerelia
Correct Answer :
A. Hydra
Related Questions
The body wall of Hydra consists of
ecotderm and endoderm
ectoderm and mesoderm
ectoderm, mesoderm and endoderm
epidermis, mesoglea and endoderm
Ctenophores generally exhibit
bilateral symmetry
radial symmetry
asymmetry
spherical symmetry
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia
The mouth opens into a large single cavity in Hydra
coelom
enterocoel
pseudocoel
coelenteron
Most favourite food of Hydra is
bacteria
water fleas
tadpoles
fishes
Nematocysts of Hydra are important for
cataching prey
paralysing prey
testing the food
testing the water
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
Division of labour on morphological basis is well exemplified by
Hydra
Obelia
Monkey
Elephant
Coelenteron of Hydra serves the double purpose of
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
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
What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
Endodermal cells
Mouth
Nematocysts
Tentacles
Cindom is a
battery of nematocysts
group of nematocysts
armed thread
none of these
Hydra reproduces by budding when
plenty of food is present
pond is going dry
Hydra is alone
water becomes muddy
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
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)
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Body wall of coelentrates is described as
diploblastic
integument
multicellular
triploblastic
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
The scientific name of organ pipe coral is
Tubipora
Astrangia
Meandra
Aeropora
Musculo-glandular cells are found in hydra
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
In jelly fishes, the adult is always
polypoid
medusoid
polymorphic
hydroid
Hydra respires through
mesoglea
general surface
pellicle
gastrodermis