1000+ Phylum - Protozoa Multiple Choice Question Answer [Solved]

1. Asexual reproduction during schizogony of malarial parasite is a kind of
A. binary fission
B. budding
C. fragmentation
D. multiple fission
Answer : D

2. A digenic protozoan parasite is
A. Monocystis
B. Amoeba
C. Plasmodium
D. Opalina
Answer : D

3. If a fresh water Amoeba for some reason in unable to form contractile vacuole, it will
A. stop forming pseudopodia
B. stop manufacturing metabolic water
C. burst consequent to osmotic swelling
D. become static for some time
Answer : C

4. In Plasmodium, gametocytes are formed by j the trophozoites in the RBS of man. They do not develop fully in RBC because of
A. antibodies present in blood
B. antigens present in blood
C. higher temperautre of blood
D. lower temeprature of blood
Answer : C

5. Trypanosoma is transmitted by
A. contamination
B. kissing
C. contagination
D. inoculation
Answer : D

6. Attack of malaria occurs every fourth day when patient is infected by
A. Plasmodium ovale
B. Plasmodium malariae
C. Plasmodium falciparum
D. Plasmodium vivax
Answer : D

7. Under unfavourable conditions, the Amoeba reproduces by
A. binary fission
B. conjugation
C. encystment
D. endomixis
Answer : C

8. The cell anus in some protozoans known as
A. cytoproct
B. peristome
C. cytostome
D. none of these
Answer : A

9. The sexual phase of life cycle of Plasmodium is completed in
A. blood of man
B. liver of man
C. stomach of female anopheles
D. salivary glands of female anopheles
Answer : C

10. The trophozoite of Entamoeba histolytica reproduces by
A. binary fission
B. sporulation
C. amitosis
D. mitosis
Answer : A

11. Nitrogenous wastes in Amoeba are expelled through
A. plasmalemma
B. pseudopodia
C. hyaline cap
D. contractile vacuole
Answer : A

12. If an Amoeba is placed in salt water, its contractile vacuole will
A. enlarge
B. disappear
C. multiple
D. burst
Answer : B

13. The process of reconstitution of macro-nulceus in Paramecium without any change in micro-nucleus is called
A. Cytogamy
B. Hemimixis
C. Endomixis
D. Autogamy
Answer : D

14. Protozoa which completely lack trophj organelles are classifed under
A. sporozoa
B. rhizopoda
C. ciliophora
D. flagellata
Answer : A

15. Plasmalemma membrane covers thebody of
A. Taenia solium
B. Paramecium
C. Amoeba proteus
D. Plasmodium
Answer : C

16. The number of daughter paramecia produced following conjugation is
A. 8 from one conjugant
B. 8 from two conjugants
C. 16 from two conjugants
D. 8-16 from two conjugants
Answer : B

17. Alternation of generations is otherwise known as
A. Epigenesis
B. Metagenesis
C. Biogenesis
D. Dimorphism
Answer : B

18. The mode of life of Plasmodium in man and mosquito respectively is
A. intracellular in both
B. intercellular in both
C. intracellular and intercellular
D. intercellular and intracellular
Answer : C

19. The erthrocytic phase of the life cycle of Plasmodium passes in
A. the stomach of female amopheles mosquito
B. parenchymatous cells of liver of man
C. erythrocytes of man
D. erythrocytes and blood of man
Answer : B

20. Malarial parasites could best be obtained from a patient
A. an hour before rise of temperature
B. when temeprature rises with rigor
C. when temeprature comes down to normal
D. five hours after the temperature reaches normal level.
Answer : D

21. Malignant tertian malaria is caused by
A. P. ovale
B. P.vivax
C. P. malariae
D. P. falciparum
Answer : D

22. Which of the following is a correct matching ?
A. Yellow fever mosquitoes toga virus B
B. Rabies saliva myxomavirus
C. Poliomyelitis fleas poliovirus
D. Tobacco mosaic disease aphids tobacco mosaic virus
Answer : A

23. The cysts of E.histolytica develop in an infected individual in the
A. intestinal wall
B. lumen of intestine
C. tissues of man
D. areas of metastatic inversion
Answer : B

24. The path followed by a food vacuole in Paramecium is referred to a
A. cycloid
B. cyclic vascular path
C. cyclosis
D. cyclosphere
Answer : C

25. Method of food intake in Paramecium is
A. holozoic
B. holophytic
C. saprozoic
D. autozoic
Answer : A

26. The trophozoite of Plasmodium lives in
A. erythrocytes of man
B. liver cells
C. stomach of mosquito
D. blood plasma
Answer : A

27. In Amoeba proteus, the term proteus is after the name of
A. the discoverer
B. a disease
C. a god
D. a place
Answer : C

28. Golgi cycle in Plasmodium occurs in man, in
A. blood
B. RBC
C. liver cells
D. stomach
Answer : B

29. The sporozoites of Plasmodium first attack
A. RBC
B. liver cells
C. muscles
D. intestine
Answer : B

30. When kerosene is sprayed on the stagnant water wherein the larvae of Anopheles develop, it
A. burns the body wall of the larvae
B. diffuses through the body wall and kills them
C. suffocates them to death
D. prevents contact of spiracles with air
Answer : D

31. Trypanosoma gambiense inhabits the human body in the
A. blood
B. Lymph
C. blood and cerebrospinal fluid
D. cerebrospinal fluid
Answer : C

32. Trophozoites of E.histolytica reproduced by
A. binary fission
B. conjugation
C. autogamy
D. budding
Answer : A

33. In the life cycle of Plasmodium, man is the
A. primary host
B. intermediate host
C. secondary host
D. alternative host
Answer : A

34. The intermediate host in the life cycle of �. histolytica is
A. Housefly
B. Mosquitoes
C. Tsetse fly
D. None of these
Answer : D

35. In an electric field, the Paramecium moves
A. towards the negative pole
B. towards the positive pole
C. around to avoid effect of current
D. forms cyst and does not move
Answer : A

36. Which day is celebrated as Malaria day ?
A. 20th August
B. 15th August
C. 26th Janurary
D. 5th June
Answer : A

37. An example of dimorphic protozoan is
A. Amoeba proteus
B. Paramecium caudatum
C. Plasmodium
D. Polystornella
Answer : D

38. The only stage of malarial parasite that can survive in the stomach of mosquito is
A. ookinate
B. oocyst
C. gametocytes
D. sporozoites
Answer : C

39. Sleeping sickness in man is caused by Trypanosoma by the bite of the infective
A. female Tsetse fly
B. male Tsetse fly
C. both male and female Tsetse flies
D. male and female aedes mosquito
Answer : C

40. Characters that are more useful in classification of animals are
A. morphological features
B. homologous features
C. analogous features
D. none of these
Answer : B

41. n Amoeba, when transferred from pond water to distilled water, forms
A. contractile vacuoles at a slower rate
B. contractile vacuoles at a faster rate
C. contractile vacuoles at the same rate
D. no contractile vacuoles
Answer : B

42. Which of the following organelles are associated with defence in Protozoans ?
A. Nematocysts
B. Statocysts
C. Trichocysts
D. Otocysts
Answer : C

43. Quinine, utilised in the treatment of malaria, is extracted from
A. cinnamom
B. cinchona
C. blister flies
D. red ants
Answer : B

44. The energy for Amoeba for doing work comes from
A. diffusion of ATP molecules from ingested organisms
B. oxidation of nutrients to form ATP
C. free energy
D. all of these
Answer : B

45. Mapacrine and Paludrine drugs are used for
A. malaria
B. amoebiasis
C. tapeworms
D. ascariasis
Answer : A

46. When the causes ot malaria was not known, it was supposed to be cuased by
A. dirty water
B. foul air
C. mosquito
D. housefly
Answer : B

47. The cilia in Paramecium are
A. all equal
B. all unequal
C. longer at posterior side
D. longer at anterior side
Answer : C

48. The resultant cells of schizogony in the life history of malarial parasite are
A. schizonts
B. merozoites
C. ookinetes
D. sporozoites
Answer : B

49. Kala-azar is a disease caused by
A. Trypanosma gambiense transmitted by Tsetse fly
B. Leishmania donovani transmitted by sandfly
C. Taenia solium transmitted by infected pork
D. Wuchereria bancrofti transmitted by Culex
Answer : B

50. The infective stage of Entamoeba histolytica is
A. sporozoite
B. minuta form
C. mature cyst
D. trophic form
Answer : C