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2.1 Protozoa — Test 1
Q1. Which of the following helps in the defence of Paramecium?✓ Trichocyst
Q2. Bioluminescence among protozoans is shown by:✓ Noctiluca
Q3. Binary fission as a method of reproduction is commonly found in:✓ Protozoans
Q4. The micronucleus of Paramecium is:✓ Diploid and reproductive
Q5. The vegetative (feeding) stage of the malarial parasite is the:✓ Trophozoite
Q6. Sporozoans (e.g. Plasmodium) are exclusively:✓ Parasites
Q7. Cyclomorphosis (seasonal change in body form) is exhibited by:✓ Daphnia
Q8. The type of pseudopodium found in Amoeba is the:✓ Lobopodium
Q9. Amoeba respires through its:✓ Plasma membrane (general body surface)
Q10. Excretion in protozoa occurs mainly through the:✓ Contractile vacuole and body surface
Q11. The mode of nutrition in Amoeba is:✓ Holozoic
Q12. The locomotory organelle of Amoeba is the:✓ Pseudopodium
Q13. The protozoan causing African sleeping sickness, transmitted by the tsetse fly, is:✓ Trypanosoma
Q14. The concept that 'Amoeba is immortal' was given by:✓ Weismann
Q15. Autogamy (self-fertilisation involving nuclear reorganisation) is shown by:✓ Paramecium aurelia
Q16. Cyclosis (streaming of cytoplasm carrying food vacuoles) occurs in:✓ Paramecium
2.1 Protozoa — Test 2
Q17. The significance of conjugation in Paramecium includes:✓ Rejuvenation, nuclear reorganisation and genetic variation
Q18. Filariasis (elephantiasis), spread by mosquitoes, is caused by:✓ Wuchereria bancrofti
Q19. Kala-azar (visceral leishmaniasis) is transmitted by the:✓ Sand fly
Q20. Which protozoan parasite belongs to the phylum Apicomplexa?✓ Toxoplasma gondii
Q21. Entamoeba histolytica, which causes amoebic dysentery, primarily infects the:✓ Large intestine
Q22. Malaria is caused by which genus of protozoan?✓ Plasmodium
Q23. The sickle-cell heterozygote is partly protected against malaria mainly because:✓ The altered red cells are less favourable for the parasite
Q24. Giardia, a flagellate protozoan, primarily causes disease of the:✓ Small intestine (diarrhoea)
Q25. Toxoplasmosis is caused by an intracellular parasite named:✓ Toxoplasma gondii
Q26. Balantidium coli, a ciliate that infects the human gut, belongs to the order:✓ Trichostomatida
Q27. The contractile vacuole of a freshwater protozoan functions mainly in:✓ Osmoregulation (expelling excess water)
Q28. The macronucleus of Paramecium chiefly controls:✓ Vegetative (metabolic) functions
Q29. Multiple fission, producing many daughter cells at once, is shown by:✓ Plasmodium (during schizogony)
Q30. Euglena is often regarded as a connecting link because it shows features of both:✓ Plants and animals
Q31. The malarial parasite is transmitted to humans by the bite of the:✓ Female Anopheles mosquito
2.1 Protozoa — Test 3
Q32. Conjugation in Paramecium differs from binary fission in that conjugation:✓ Involves exchange of nuclear material between two individuals
Q33. Pellicle, a firm but flexible covering, gives Paramecium its:✓ Definite shape while allowing movement
Q34. Amoeba captures its food by the process of:✓ Phagocytosis (engulfing by pseudopodia)
Q35. Encystment in protozoans helps them to:✓ Survive unfavourable conditions
Q36. The disease amoebiasis is caused by:✓ Entamoeba histolytica
Q37. In the protozoan life cycle, the resistant, infective stage of Plasmodium injected by the mosquito is the:✓ Sporozoite
Q38. Holozoic nutrition, as seen in Amoeba and Paramecium, involves:✓ Ingesting solid food and digesting it internally
Q39. The protozoan group that moves using many short hair-like cilia is the:✓ Ciliophora (ciliates)
Q40. The protozoan group that moves using flagella is the:✓ Mastigophora (flagellates)
Q41. Chagas disease, caused by Trypanosoma cruzi, is transmitted by the:✓ Triatomine (reduviid) bug
Q42. Eukaryotic cells that bear flagella include all of these EXCEPT:✓ Mature red blood cells
Q43. The food vacuole of a protozoan functions in:✓ Intracellular digestion of ingested food
Q44. Sleeping sickness, kala-azar and Chagas disease are all caused by protozoans of the group:✓ Flagellated kinetoplastids (Trypanosoma and Leishmania)
Q45. The protozoan phylum whose members all possess an apical complex for penetrating host cells is:✓ Apicomplexa
Q46. A protozoan that lives in the human mouth and is generally harmless is:✓ Entamoeba gingivalis