A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
Correct Answer :
D. Polyp of Obelia
Related Questions
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
None of these
Enteron is divided by mesentries in
Aurelia
Sea anemone
Obelia
Hydra
Green Hydra is
Hydra vulgaris
Chlorohydra viridisma
Hydra oligaetis
None of these
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
Coelenteron of Hydra serves the double purpose of
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Which of the following animals has a nervous system but no brain ?
Earthworm
Hydra
Amoeba
Cockroach
Body wall of coelentrates is described as
diploblastic
integument
multicellular
triploblastic
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
Pueumatophore is present in
Tubularia
Obelia
Hydra
Physalia
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
In Hydra, the gastrodermis is composed of
musculo-epithelial cells
musculo-nutritive cells
sensory cells
cniboblasts
The poisonous fluid present in the nematocysts of Hydra is
toxin
venom
hypnotoxin
haematin
Hydra has no special structure for
attachment
respiration
food capturing
offense
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
"Portuguese Man of War" is the common name for
Aurelia
Metridium
Physalia
Tubipora
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
Digestion in Hydra is
intracellular
extracellular
first extracellular, then intracellular
first intracellular, then extracellular
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
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
Division of labour on morphological basis is well exemplified by
Hydra
Obelia
Monkey
Elephant
Brain coral is
Fungia
Hydra
Meandria
Tubipora
Most favourite food of Hydra is
bacteria
water fleas
tadpoles
fishes
The tentacles of Hydra are
pinnate
hollow
solid
frilled
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
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 is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic