The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Correct Answer :
B. planula
Related Questions
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
Rhopalia are the sense organs in medusa belonging to the class
hydrozoa
scyphozoa
actinozoa
all of these
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
Brain coral is
Fungia
Hydra
Meandria
Tubipora
Cindom is a
battery of nematocysts
group of nematocysts
armed thread
none of these
The body wall of Hydra consists of
ecotderm and endoderm
ectoderm and mesoderm
ectoderm, mesoderm and endoderm
epidermis, mesoglea and endoderm
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
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
Enteron is divided by mesentries in
Aurelia
Sea anemone
Obelia
Hydra
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)
Nematocytes are the specialised cells found in the members of the phylum
porifera
coelentrata
annelida
platyhelminthes
What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
Endodermal cells
Mouth
Nematocysts
Tentacles
The scientific name of organ pipe coral is
Tubipora
Astrangia
Meandra
Aeropora
Hydra reproduces by gemmation (budding) when
Plenty of food is present
Pond dries up
Water becomes muddy
Hydra is alone
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
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
Nematocysts of Hydra are important for
cataching prey
paralysing prey
testing the food
testing the water
The tentacles of Hydra are
pinnate
hollow
solid
frilled
Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
"Portuguese Man of War" is the common name for
Aurelia
Metridium
Physalia
Tubipora
A Hydra usually possess
single testis and many ovaries
single ovary and many testes
one testis and one ovary
many testes and many ovaries
Musculo-glandular cells are found in hydra
on the tentacles
on the hypostome
on the basal disc
in the gastrodermis
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
None of these
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
Coral reef formation is mainly related to
sponges
anthozoans
molluscs
hydrozoans