Body wall of coelentrates is described as
diploblastic
integument
multicellular
triploblastic
Correct Answer :
A. diploblastic
Related Questions
In Hydra, the gastrodermis is composed of
musculo-epithelial cells
musculo-nutritive cells
sensory cells
cniboblasts
The larva of Hydra is known as
hydrula
planula
tadpole
amphiblastula
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
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
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
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
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
"Portuguese Man of War" is the common name for
Aurelia
Metridium
Physalia
Tubipora
Cindom is a
battery of nematocysts
group of nematocysts
armed thread
none of these
Six septa or six mesenteries are characteristic of
Aurelia
Sea anemone
Obelia
Hydra
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
A Hydra usually possess
single testis and many ovaries
single ovary and many testes
one testis and one ovary
many testes and many ovaries
Brain coral is
Fungia
Hydra
Meandria
Tubipora
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
The body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Nematocytes are the specialised cells found in the members of the phylum
porifera
coelentrata
annelida
platyhelminthes
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
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
Rhopalia are the sense organs in medusa belonging to the class
hydrozoa
scyphozoa
actinozoa
all of these
What is common between Hydra and Obelia ?
Both show polymorphism
Both possess a larval stage in their life history called planula
Both are found in fresh water
Both havb a jelly like mesoglea with no cells
Coelenteron of Hydra serves the double purpose of
digestion and circulation
digestion and storage
excretion and locomotion
circulation and storage
Hydra has no special structure for
attachment
respiration
food capturing
offense
The mouth opens into a large single cavity in Hydra
coelom
enterocoel
pseudocoel
coelenteron
A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
The nematocysts develop from
musculo-epithelial cells
interstitial cells
digestive cells
nerve cell
The number of tentacles in Hydra is
24
610
1040
4050