If an Amoeba is placed in salt water, its contractile vacuole will
enlarge
disappear
multiple
burst
Correct Answer :
B. disappear
Related Questions
The oriental sores in human skin are caused by
Leishmania tropica
Phlebotomus
Balantidium
Leishmania donovani
The disease caused by Trypanosoma cruzi is
sleeping sickness
chaga's disease
kala azar
oriental sore
Incubation period of Plasmodium vwax is about
6-8 weeks
10-12 days
15-20 days
20-40 days
Amoebiasis is caused by
Plasmodium vivax
Taenia solium
Entamoeba histolytica
Entamoeba gingimlis
The cell anus in some protozoans known as
cytoproct
peristome
cytostome
none of these
The process of reconstitution of macro-nulceus in Paramecium without any change in micro-nucleus is called
Cytogamy
Hemimixis
Endomixis
Autogamy
Alternation of generations is otherwise known as
Epigenesis
Metagenesis
Biogenesis
Dimorphism
A liver biopsy of a patient suffering from amoebic hepatic abscess would demonstrate the presence of
trophozoites
cysts
precystic stages
sporozoites
The energy for Amoeba for doing work comes from
diffusion of ATP molecules from ingested organisms
oxidation of nutrients to form ATP
free energy
all of these
The only stage of malarial parasite that can survive in the stomach of mosquito is
ookinate
oocyst
gametocytes
sporozoites
The pseudopodia of Amoeba are meant for
feeding
offence and defence
locomotion
both (a) and (c)
The type of pseudopodia found in Amoeba are
reticulopodia
lobopodia
actinopodia
aropodia
Highly polypoid meganucleus is present in
flagellates
ciliates
sporozoans
rhizopodans
The pseudopodia ar formed in Amoeba
when it comes in contact with food particles
by movement of surrounding water
by exchange of salts with the medium
by sol-gel transformation of cytoplasm
In Plasmodium, gametocytes are formed by j the trophozoites in the RBS of man. They do not develop fully in RBC because of
antibodies present in blood
antigens present in blood
higher temperautre of blood
lower temeprature of blood
Entamoeba differs from Amoeba in not having
nucleus
pseudopodia
ectoplasm
contractile vascule
Sleeping sickness in man is caused by Trypanosoma by the bite of the infective
female Tsetse fly
male Tsetse fly
both male and female Tsetse flies
male and female aedes mosquito
The ecological niche of Entamoeba histolytica is
small intestine of man
arge intestine of man
fresh water body such as ponds, rivers etc.
stagnaant water
African sleeping sickness or Gambiense fever is caused by
Entamoeba
Trypanosma
Leishmania
Trichomonas
In the life cycle of Plasmodium, man is the
primary host
intermediate host
secondary host
alternative host
Quinine, utilised in the treatment of malaria, is extracted from
cinnamom
cinchona
blister flies
red ants
Gametocytes of Plasmodium are formed in
liver of man
blood of man
RBC of man
stomach of female mosquito
Which day is celebrated as Malaria day ?
20th August
15th August
26th Janurary
5th June
The resultant cells of schizogony in the life history of malarial parasite are
schizonts
merozoites
ookinetes
sporozoites
Treatment of the infection by malarial parasite in the principal host is studied under
chemo-therapy
chemo-diagnosis
chemo-prophy laxis
prophylaxis
In a Paramecium, the trichocysts are used for
fight or flight response
defence
offense
both (b) and (c)
Characters that are more useful in classification of animals are
morphological features
homologous features
analogous features
none of these
Method of food intake in Paramecium is
holozoic
holophytic
saprozoic
autozoic
Mild tertian malaria is caused by
Plasmodium vivax
Plasmodium falciparum
Plasmodium ovale
Plasmodium malariae
The micronucleus in Paramecium is concerried with
vegetative function of the body
all the functions of the body
reproductive function of the body
locomotion