Digestion in Hydra is
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
Correct Answer :
C. first extracellular, then intracellular
Related Questions
The number of tentacles in Hydra is
24
610
1040
4050
If nematocysts are absent in Hydra, which is affected
Locomotion
Predation
Both (a) and (b)
Reproduction
Tentaculocysts in Obelia are meant for
locomotion
balancing
swimming
reproduction
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
The first invertebrates to develop a true nervous system are
sponges
coelenterates
annelids
arthropods
In Hydra, buds always arise at
the hypostome
the junction of hypostome and stomach
in junction of stomach and stalk
the stomach
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
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
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Nematocytes are the specialised cells found in the members of the phylum
porifera
coelentrata
annelida
platyhelminthes
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
A chitinous material is present in the
coenosarc of Obelia
perisarc of Obelia
body wall of Sea anemone
umbrella of Aurelia
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
The testes of hydra are located
below the ovaries
below the tentacles
further down the tentacles to occupy central position of the body
anywhere on the body between tentacles and adhesive disc
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
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
Brain coral is
Fungia
Hydra
Meandria
Tubipora
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
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
The scientific name of organ pipe coral is
Tubipora
Astrangia
Meandra
Aeropora
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
all of these
What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
Endodermal cells
Mouth
Nematocysts
Tentacles
The tentacles of Hydra are
pinnate
hollow
solid
frilled
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia
The mouth opens into a large single cavity in Hydra
coelom
enterocoel
pseudocoel
coelenteron
Hydra prevents self fertilization by being
protogynous
hermaphrodite
monoecious
protandrous