Phylum - Protozoa 1000+ MCQ with answer for SSC Stenographer

1. Oocyst of Plasmodium develops from
A. female gametocyte
B. fertilised microgamete
C. fertilised macrogamete
D. ookinete
Answer : C

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

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

4. 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

5. Malaria is a disease transmitted by the bite of
A. male Culex
B. female Culex
C. male A nopheles
D. female Anopheles
Answer : D

6. In Paramecium, proteins are digested
A. partly in endoplasm and partly in food vacuole
B. during the acid phase of the food vacuole
C. during the alkaline phase of the food vacuole
D. both (b) and (c)
Answer : D

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

8. 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

9. Pseudopodia of Amoeba are important for
A. locomotion only
B. feeding only
C. both (a) and (b)
D. offence of defence
Answer : C

10. 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

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

12. 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

13. Ingestion of some water with food in Amoeba takes place by the process of
A. endosmosis
B. pinocytosis
C. phagocytosis
D. none of these
Answer : C

14. Vector can be defined as
A. disease transmitting host
B. natural reservoir of disease causing organism
C. pathogenic organism
D. any kind of disease transmitting organism
Answer : D

15. The transmission of Entamoeba histolytica takes place by
A. female anopheles mosquito
B. air
C. kisisng
D. contaminated food and water
Answer : A

16. The ecological niche of Entamoeba histolytica is
A. small intestine of man
B. arge intestine of man
C. fresh water body such as ponds, rivers etc.
D. stagnaant water
Answer : B

17. The digestive enzymes in Paramecium are secreted in
A. food vacuoles directly
B. lysosomes and then released into food vacuole
C. endoplasm and then pass into food vacuole
D. both lysosomes and endoplasm
Answer : B

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

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

20. A food vacuole develops in Paramecium at the distal end of
A. cytopharynx
B. oral grove
C. cytostome
D. oesophagus
Answer : D

21. Gametocytes of Plasmodium are formed in
A. liver of man
B. blood of man
C. RBC of man
D. stomach of female mosquito
Answer : C

22. The life-cycle of malarial parasite in liver is called
A. erythrocytic stage
B. pre-erythrocytic stage
C. exo-erythrocytic stage
D. post-erythrocytic stage
Answer : B

23. Highly polypoid meganucleus is present in
A. flagellates
B. ciliates
C. sporozoans
D. rhizopodans
Answer : B

24. Trypanosoma shows the phenomenon of
A. amorphism
B. dimorphism
C. trimorphism
D. polymorpism
Answer : D

25. A liver biopsy of a patient suffering from amoebic hepatic abscess would demonstrate the presence of
A. trophozoites
B. cysts
C. precystic stages
D. sporozoites
Answer : D

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

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

28. 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

29. Schuffner's granules or dots are found in
A. trophozoite
B. sporozoite
C. schizont
D. merozoite
Answer : C

30. The intermediate host of malarial parasite is
A. Man
B. Female Anopheles
C. Culex
D. Monkeys
Answer : B

31. The function of neuro-motor system of Paramecium is
A. co-ordination of various external stimuli
B. co-ordination of ciliary beat
C. control of contractile vacuole
D. any of these
Answer : B

32. The feeding stage in the life cycle of PlasA tnodium is
A. merozoite
B. sporozoite
C. cryptozoite
D. trophozoite
Answer : D

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

34. 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

35. Gametocytes of Plasmodium are produced in the
A. stomach of mosquito
B. erythrocytes of man from schizonts
C. erythrocytes of man from merozoites
D. all of these
Answer : C

36. Trypanosomiasis is a disease, transmitted by vector
A. Louse
B. Tsetse fly
C. Mayfly
D. Firefly
Answer : B

37. The giant Amoeba is
A. Amoeba proteus
B. Choas
C. Foraminifera
D. Pelomyxa
Answer : D

38. Inoculation in malaria is out of question because
A. Plasmodium produces minute bodies
B. Plasmodium produces antitoxins
C. Plasmodium produces antitoxins and antibodies
D. All of these
Answer : A

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

40. Schizont stage in the life cycle of malarial parasite occurs in
A. erythrocytes of man
B. stomach of Anopheles
C. salivary glands of Anopheles
D. blood of man
Answer : A

41. 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

42. All stages in the life cycle of malarial parasite are haploid except
A. gamout
B. ookinete
C. schizont
D. sporont
Answer : B

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

44. Encystment in Amoeba serves for
A. perennation
B. reproduction
C. dispersal
D. all of these
Answer : D

45. 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

46. 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

47. Locomotory organelles in the parasitic protozoa of class sporozoa are
A. cilia
B. flagella
C. pseudopodia
D. absent
Answer : D

48. 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

49. Amoebiasis is caused by
A. Plasmodium vivax
B. Taenia solium
C. Entamoeba histolytica
D. Entamoeba gingimlis
Answer : C

50. According to Whittaker's system of classification, all the living organisms are classifed into 5 kingdoms and Viruses are placed under
A. Monera
B. Protista
C. Protoctista
D. None of these
Answer : D