"Portuguese Man of War" is the common name for
Aurelia
Metridium
Physalia
Tubipora
Correct Answer :
C. Physalia
Related Questions
The mesoglea in Hydra is traversed by
sensory cells
nerve cells
interstitial cells
all of these
In Hydra, buds always arise at
the hypostome
the junction of hypostome and stomach
in junction of stomach and stalk
the stomach
If nematocysts are absent in Hydra, which is affected
Locomotion
Predation
Both (a) and (b)
Reproduction
The number of tentacles in Hydra is
24
610
1040
4050
Nematocysts of Hydra are important for
cataching prey
paralysing prey
testing the food
testing the water
A hydranth is
Blastostyle of Obelia
Gonad of Hydra
Medusa of Obelia
Polyp of Obelia
Hydra is
marine, radial, symmetrical and diploblastic
fresh water, biradial, symmetrical and triploblastic
fresh water, radial, symmetrical and diploblastic
marine, radial, symmetrical and triploblastic
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
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
Division of labour on morphological basis is well exemplified by
Hydra
Obelia
Monkey
Elephant
The mesoglea of Hydra contains
nerve cells
sensory cells
muscle fibres
no cells
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
Hydra is put under phylum coelentrata because it has
tentacles
cnidoblasts
hypostome
interstitial cells
Which of the following tissue is absent in Hydra ?
Connective tissue
Epithelial tissue
Muscular tissue
Nervous tissue
Hydra reproduces by budding when
plenty of food is present
pond is going dry
Hydra is alone
water becomes muddy
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)
Ephyra is the larval form of
Sea anemone
Aurelia
Obelia
Hydra
Tentacles of Hydra help in
locomotion
food capturing
locomotion and food capturing
respiration
Hydra responds to a strong mechanical stimulus such as agitating the surface of water by
somersaulting
contracting a part or whole of its body
walking away
looping
Nutritionally Hydra is
saprozoic
herbivorous
insectivorous
carnivorous
In Hydra, the nematocysts are abundant on
upper part
middle part
tentacles
lower part
Which one is found in Hydra
Metabolism
Metamerism
Melting
Metamorphosis
The small green alga that lives inside Hydra is called
Zoochlorella
Chlamydomonas
Euglena
None of these
Body wall of coelentrates is described as
diploblastic
integument
multicellular
triploblastic
Brain coral is
Fungia
Hydra
Meandria
Tubipora
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 body of Hydra is
asymmetrical
bilaterally symmetrical
radially symmetrical
irregular
Strobilization is the characteristic feature of
Aurelia
Hydra
Metridium
Physalia
Polymorphism is found in
Hydra
Aleyonium
Aurelia
Physalia