Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
Correct Answer :
B. Chlorohydra viridisma
Related Questions
In Hydra, buds always arise at
the hypostome
the junction of hypostome and stomach
in junction of stomach and stalk
the stomach
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
Coelenteron of Hydra serves the double purpose of
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Hydra respires through
mesoglea
general surface
pellicle
gastrodermis
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
Brain coral is
Fungia
Hydra
Meandria
Tubipora
A coelentrate, commonly known as fresh water polyp is
Hydra
Obelia
Physalia
Acerelia
Coral reef formation is mainly related to
sponges
anthozoans
molluscs
hydrozoans
Ctenophores generally exhibit
bilateral symmetry
radial symmetry
asymmetry
spherical symmetry
The body wall of Hydra consists of
ecotderm and endoderm
ectoderm and mesoderm
ectoderm, mesoderm and endoderm
epidermis, mesoglea and endoderm
Coelenteron in Hydra serves the purpose of
digestion and circulation
digestion and storage
excretion and digestion
circulation and storage
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
None of these
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
The scientific name of organ pipe coral is
Tubipora
Astrangia
Meandra
Aeropora
A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
Ephyra is the larval form of
Sea anemone
Aurelia
Obelia
Hydra
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
Cindom is a
battery of nematocysts
group of nematocysts
armed thread
none of these
Polymorphic coelentrates are the members of the class
hydrozoa
scyphozoa
actinozoa
all of these
Digestion in Hydra is
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
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
Enteron is divided by mesentries in
Aurelia
Sea anemone
Obelia
Hydra
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
In Hydra, the gastrodermis is composed of
musculo-epithelial cells
musculo-nutritive cells
sensory cells
cniboblasts
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