Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Correct Answer :
D. carnivorous
Related Questions
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
If nematocysts are absent in Hydra, which is affected
Locomotion
Predation
Both (a) and (b)
Reproduction
Hydra reproduces by gemmation (budding) when
Plenty of food is present
Pond dries up
Water becomes muddy
Hydra is alone
A chitinous material is present in the
coenosarc of Obelia
perisarc of Obelia
body wall of Sea anemone
umbrella of Aurelia
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
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
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
The body wall of Hydra consists of
ecotderm and endoderm
ectoderm and mesoderm
ectoderm, mesoderm and endoderm
epidermis, mesoglea and endoderm
Most favourite food of Hydra is
bacteria
water fleas
tadpoles
fishes
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
Hydra is negatively chemotropic because it
prefers weak light
moves away from strong light
avoids chlorinated water
moves to water of low temperature
Digestion in Hydra is
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
In jelly fishes, the adult is always
polypoid
medusoid
polymorphic
hydroid
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
The mesoglea present in Hydra in between epidermis and gastrodermis is
non-cellular and jelly like material
cellular jelly like material containing sensory cells
cellular jelly like material containing nerve cells
both (a) and (c)
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
In Hydra, the gastrodermis is composed of
musculo-epithelial cells
musculo-nutritive cells
sensory cells
cniboblasts
Which of the following animals has a nervous system but no brain ?
Earthworm
Hydra
Amoeba
Cockroach
Polymorphic coelentrates are the members of the class
hydrozoa
scyphozoa
actinozoa
all of these
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
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
Division of labour on morphological basis is well exemplified by
Hydra
Obelia
Monkey
Elephant
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Hydra has no special structure for
attachment
respiration
food capturing
offense
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Among coelenterates medusoid individuals are absent in members of the class
hydrozoa
scyphozoa
anthozoa
all the three
Nematocytes are the specialised cells found in the members of the phylum
porifera
coelentrata
annelida
platyhelminthes
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
all of these