NEET Biology Biological Classification And System Of Classification / जैविक वर्गीकरण और वर्गीकरण की प्रणाली Question Bank

done Critical Thinking Total Questions - 32

• 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
  View Solution play_arrow

• 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
  View Solution play_arrow

• 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
  View Solution play_arrow

• 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
  View Solution play_arrow

• 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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