Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
Correct Answer :
A. Metabolism
Related Questions
Musculo-glandular cells are found in hydra
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
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
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
Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
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
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
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
What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
Endodermal cells
Mouth
Nematocysts
Tentacles
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
The mouth opens into a large single cavity in Hydra
coelom
enterocoel
pseudocoel
coelenteron
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
Ctenophores generally exhibit
bilateral symmetry
radial symmetry
asymmetry
spherical symmetry
A coelentrate, commonly known as fresh water polyp is
Hydra
Obelia
Physalia
Acerelia
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia
Hydra reproduces by budding when
plenty of food is present
pond is going dry
Hydra is alone
water becomes muddy
A Hydra usually possess
single testis and many ovaries
single ovary and many testes
one testis and one ovary
many testes and many ovaries
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
None of these
Polymorphism is best defined as the occurrence of
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
Hydra respires through
mesoglea
general surface
pellicle
gastrodermis
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Rhopalia are the sense organs in medusa belonging to the class
hydrozoa
scyphozoa
actinozoa
all of these
Most favourite food of Hydra is
bacteria
water fleas
tadpoles
fishes
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
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
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)