Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Correct Answer :
D. carnivorous
Related Questions
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 tentacles of Hydra are
pinnate
hollow
solid
frilled
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
Coelenteron of Hydra serves the double purpose of
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
If nematocysts are absent in Hydra, which is affected
Locomotion
Predation
Both (a) and (b)
Reproduction
In Hydra, the physiological division of labour is exhibited by
cellular layers
tissues
cell differentiation
organs
Nematocysts of Hydra are important for
cataching prey
paralysing prey
testing the food
testing the water
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 number of tentacles in Hydra is
24
610
1040
4050
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
Polymorphic coelentrates are the members of the class
hydrozoa
scyphozoa
actinozoa
all of these
A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
Ephyra is the larval form of
Sea anemone
Aurelia
Obelia
Hydra
Coral reef formation is mainly related to
sponges
anthozoans
molluscs
hydrozoans
Most favourite food of Hydra is
bacteria
water fleas
tadpoles
fishes
In Hydra, the absence of circulatory system is fulfilled by
ectoderm
endoderm
mesoglea
coelenteron
A chitinous material is present in the
coenosarc of Obelia
perisarc of Obelia
body wall of Sea anemone
umbrella of Aurelia
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
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
Nematocytes are the specialised cells found in the members of the phylum
porifera
coelentrata
annelida
platyhelminthes
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
In Hydra, the nematocysts are abundant on
upper part
middle part
tentacles
lower part
Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
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
What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
Endodermal cells
Mouth
Nematocysts
Tentacles