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question_answer1)
The major function of contractile vacuole is [BHU 1992; CBSE PMT 1995; CPMT 1996; RPMT 2000]
A)
Excretion done
clear
B)
Circulation done
clear
C)
Osmoregulation done
clear
D)
All the above done
clear
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question_answer2)
Centric discoid form of diatom is [Haryana PMT 2001]
A)
Diploneis done
clear
B)
Coscinodiscus done
clear
C)
Stephanodiscus done
clear
D)
Camphyloneis done
clear
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question_answer3)
Which of the following can be used as bacteriological filter [JIPMER 2002]
A)
Gelidium done
clear
B)
Batrachospermum done
clear
C)
Oscillatoria done
clear
D)
Cymbella done
clear
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question_answer4)
Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed contractile vacuole. When both were transferred to sea water and got adapted, both X and Y lost their contractile vacuole. From these observation we conclude that [AFMC 1983, AIIMS 1983]
A)
Both X and Y are marine species done
clear
B)
Species Y is marine and X is fresh water done
clear
C)
Species X is marine and Y is fresh water done
clear
D)
Both X and Y are fresh water done
clear
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question_answer5)
Amoeba reacts [CPMT 1987]
A)
Negatively to strong light and positively to weak light done
clear
B)
Positively to strong light and negatively to weak light done
clear
C)
Unaffected by light intensity done
clear
D)
Positive to both strong and weak light done
clear
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question_answer6)
Contractile vacuole of Amoeba placed in salt water will [AFMC 1985]
A)
Burst done
clear
B)
Disappear done
clear
C)
Enlarge done
clear
D)
Multiply done
clear
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question_answer7)
Plasmodium, the malarial parasite, belongs to class [CBSE PMT 1990]
A)
Sarcodina done
clear
B)
Ciliata done
clear
C)
Sporozoa done
clear
D)
Dinophyceae done
clear
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question_answer8)
Periodic appearance of malaria symptoms occurs due to periodic [AMU 1992]
A)
Entry of merozoites into erythrocytes done
clear
B)
Attack of liver cells by merozoites done
clear
C)
Formation of signet ring done
clear
D)
Release of pyrogen in blood done
clear
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question_answer9)
Amoeba taken downstream to estuary will show [CPMT 1993]
A)
Disappearance of contractile vacuole done
clear
B)
Binary fission done
clear
C)
Encystment done
clear
D)
Stoppage of feeding done
clear
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question_answer10)
In Amoeba, pseudopodia are formed due to [RPMT 1995]
A)
Contact with food done
clear
B)
Sol ⇋ gel change done
clear
C)
Movement towards area of higher temeprature done
clear
D)
All the above done
clear
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question_answer11)
Which stage of Plasmodium is infective for Mosquito [RPMT 1996]
A)
Trophozoite done
clear
B)
Gametocyte done
clear
C)
Ookinete done
clear
D)
Sporozoite done
clear
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question_answer12)
Chromatid bodies occurs in Entamoeba during [APMEE 1996; Pb. PMT 1999; AIIMS 2002]
A)
Precyst stage done
clear
B)
Early cysts done
clear
C)
Tetranucleate cysts done
clear
D)
Trophozoites done
clear
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question_answer13)
Amoeba stops producing pseudopodia during [Haryana PMT 2001]
A)
Alkaline condition done
clear
B)
Starvation done
clear
C)
Acidic condition done
clear
D)
Touch done
clear
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question_answer14)
Marine protozoans lack contractile vacuole because [DPMT 2001]
A)
Their body cannot accommodate it done
clear
B)
They are hypo osmotic to their environment done
clear
C)
They are isotonic with their environment done
clear
D)
Osmoregulation is done by cell membrane done
clear
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question_answer15)
Microfossile often present in petroleum producing formation are those of [AMU 2001]
A)
Radiolarians done
clear
B)
Diatoms done
clear
C)
Helizoans done
clear
D)
Foraminiferans done
clear
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question_answer16)
Amoeba moves when [RPMT 2002]
A)
Upper part of plasma-gel changes to plasmasol done
clear
B)
Lower part of plasmasol changes into gel done
clear
C)
Upper part of plasmasol changes into plasmagel done
clear
D)
All the above done
clear
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question_answer17)
People recovering from long illness, are advised to include alga Spirulina in their diet because it [AIIMS 2003]
A)
Has antibiotic properties done
clear
B)
Restores intestinal flora done
clear
C)
Is rich in proteins done
clear
D)
Makes the food easy to digest done
clear
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question_answer18)
Histological differentiation is absent in [CPMT 1980]
A)
Amoeba done
clear
B)
Hydra done
clear
C)
Cockroach done
clear
D)
Earthworm done
clear
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question_answer19)
Exoerythrocytic schizogony of Plasmodium takes place in [MP PMT 1987]
A)
RBC done
clear
B)
Leucocytes done
clear
C)
Liver in which cryptomerozoites are formed done
clear
D)
Liver in which metacryptomerozoites are formed done
clear
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question_answer20)
In Plasmodium, gametocytes are formed in man, but do not develop fully in the R.B.C. because of [CPMT 1983]
A)
Antibodies present in blood done
clear
B)
Antigens present in blood done
clear
C)
Higher temperature of blood done
clear
D)
Lower temperature of blood done
clear
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question_answer21)
Malarial parasite can best be obtained from a patient [AFMC 1985; CPMT 1973]
A)
An hour before rise of temperature done
clear
B)
When temperature rises with rigor done
clear
C)
When temperature comes to normal done
clear
D)
Five hours after the temperature reaches to normal done
clear
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question_answer22)
The chill and fever recurring after 48 hours in benign tertian malaria is due to [CPMT 1987]
A)
Plasmodium vivax done
clear
B)
P. malariae done
clear
C)
P. falciparum done
clear
D)
None of the above done
clear
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question_answer23)
In malaria, shivering occurs when [MP PMT 1987, 89]
A)
Schizonts enter R.B.C. done
clear
B)
Sporozoites enter human body done
clear
C)
Merozoites are liberated from R.B.C. alongwith toxin done
clear
D)
Signet ring stage is attained done
clear
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question_answer24)
If all ponds and puddles are destroyed, the organism likely to be destroyed is [CBSE PMT 1993]
A)
Leishmania done
clear
B)
Trypanosoma done
clear
C)
Ascaris done
clear
D)
Plasmodium done
clear
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question_answer25)
In Plasmodium, gametocytes are formed from [Bihar PMT 1994]
A)
Schizont done
clear
B)
Trophozoitev done
clear
C)
Sporozoite done
clear
D)
Merozoite done
clear
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question_answer26)
Destruction of nucleus in Amoeba results in [RPMT 1995]
A)
Immediate death done
clear
B)
Slowing down of metabolic activity and ultimate death done
clear
C)
Quick locomotion done
clear
D)
No change done
clear
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question_answer27)
After how many days could a patient commonly feel malaria from the time of biting of mosquito [CPMT 1998]
A)
2 - 8 days done
clear
B)
8 - 10 days done
clear
C)
10 - 20 days done
clear
D)
20 - 30 days done
clear
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question_answer28)
Motile elongate zygote of Plasmodium occurs in [CPMT 1999]
A)
Human RBCs done
clear
B)
Human liver done
clear
C)
Salivary glands of mosquito done
clear
D)
Gut of mosquito done
clear
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question_answer29)
Which is wrong combination [AIIMS 2001]
A)
Haemocyanin - Prawn done
clear
B)
Haemoglobin in mammals - RBC done
clear
C)
Haemoglobin in plasma - Pheretima done
clear
D)
Haemozoin - Plasmodium cytoplasm done
clear
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question_answer30)
During conjugation in Paramecium [BHU 1999; Pb. PMT 2004]
A)
Out of the four micronuclei formed, three nuclei degenerate done
clear
B)
Out of the twelve macronuclei formed, four nuclei degenerate done
clear
C)
Zygote nucleus undergoes eight successive divisions in each conjugant done
clear
D)
Out of the sixteen nuclei formed from zygote, 12 become macronuclei and 4 micronuclei done
clear
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question_answer31)
In humans, schizont stage of Plasmodium is found in [MP PMT 2003]
A)
Liver cells only done
clear
B)
Liver, spleen and blood cells done
clear
C)
RBCs and liver cells done
clear
D)
RBCs only done
clear
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question_answer32)
Malaria parasite harm liver cells [RPMT 1999]
A)
In erythrocytic cycle done
clear
B)
After erythrocytic cycle done
clear
C)
Before erythrocytic cycle done
clear
D)
None of these done
clear
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