1. What is the primary role of protozoa in the ecosystem? a) Producers
    b) Consumers
    c) Decomposers
    d) Both consumers and decomposers

    Answer: d) Both consumers and decomposers

  2. Which of the following protozoa causes malaria? a) Plasmodium
    b) Entamoeba histolytica
    c) Trypanosoma brucei
    d) Toxoplasma gondii

    Answer: a) Plasmodium

  3. How do protozoa typically reproduce? a) Binary fission
    b) Budding
    c) Sexual reproduction
    d) Both a and b

    Answer: d) Both a and b

  4. Which protozoan parasite causes African sleeping sickness? a) Trypanosoma brucei
    b) Giardia lamblia
    c) Entamoeba histolytica
    d) Toxoplasma gondii

    Answer: a) Trypanosoma brucei

  5. What is the main vector of the Plasmodium parasite? a) Housefly
    b) Tsetse fly
    c) Mosquito
    d) Tick

    Answer: c) Mosquito

  6. Which protozoan is responsible for causing dysentery? a) Trypanosoma cruzi
    b) Entamoeba histolytica
    c) Plasmodium falciparum
    d) Giardia intestinalis

    Answer: b) Entamoeba histolytica

  7. Which of the following is a key ecological role of protozoa? a) Nitrogen fixation
    b) Decomposition of organic matter
    c) Oxygen production
    d) Carbon dioxide absorption

    Answer: b) Decomposition of organic matter

  8. What type of environment do protozoa predominantly inhabit? a) Terrestrial habitats
    b) Aquatic environments
    c) Extreme environments
    d) None of the above

    Answer: b) Aquatic environments

  9. Which group of protozoa is known for having a flagellum for locomotion? a) Ciliates
    b) Amoeboids
    c) Flagellates
    d) Sporozoans

    Answer: c) Flagellates

  10. Which of the following protozoa causes toxoplasmosis? a) Giardia lamblia
    b) Plasmodium falciparum
    c) Toxoplasma gondii
    d) Entamoeba histolytica

    Answer: c) Toxoplasma gondii

  11. What is the primary mode of transmission for the Trypanosoma parasite? a) Contaminated water
    b) Bites from infected mosquitoes
    c) Ingestion of contaminated food
    d) Bites from the tsetse fly

    Answer: d) Bites from the tsetse fly

  12. Which of the following diseases is caused by Giardia lamblia? a) Malaria
    b) Giardiasis
    c) Dysentery
    d) Toxoplasmosis

    Answer: b) Giardiasis

  13. How do protozoa contribute to nutrient cycling in ecosystems? a) By fixing atmospheric nitrogen
    b) By decomposing organic matter and recycling nutrients
    c) By synthesizing oxygen
    d) By producing carbon dioxide for plant photosynthesis

    Answer: b) By decomposing organic matter and recycling nutrients

  14. What is a common characteristic of sporozoans? a) They have flagella
    b) They reproduce through spores
    c) They are free-living
    d) They are photosynthetic

    Answer: b) They reproduce through spores

  15. Which protozoan parasite is responsible for Chagas disease? a) Plasmodium falciparum
    b) Trypanosoma cruzi
    c) Entamoeba histolytica
    d) Toxoplasma gondii

    Answer: b) Trypanosoma cruzi

  16. What form of reproduction is common in many protozoa? a) Binary fission
    b) Fragmentation
    c) Budding
    d) Sexual reproduction only

    Answer: a) Binary fission

  17. What role do protozoa play in aquatic food webs? a) They act as primary producers
    b) They serve as herbivores and consumers of bacteria
    c) They are decomposers of dead matter
    d) They are the top predators

    Answer: b) They serve as herbivores and consumers of bacteria

  18. Which of the following protozoa causes the disease “Amoebic dysentery”? a) Plasmodium
    b) Trypanosoma brucei
    c) Entamoeba histolytica
    d) Toxoplasma gondii

    Answer: c) Entamoeba histolytica

  19. What is the primary method of transmission for Giardia lamblia? a) Mosquito bites
    b) Contaminated food and water
    c) Infected blood transfusions
    d) Contact with infected animals

    Answer: b) Contaminated food and water

  20. Which protozoan is commonly associated with the “swimmer’s itch”? a) Toxoplasma gondii
    b) Giardia lamblia
    c) Schistosoma
    d) Plasmodium falciparum

    Answer: c) Schistosoma

  21. What type of protozoan is responsible for malaria? a) Flagellates
    b) Ciliates
    c) Sporozoans
    d) Amoeboids

    Answer: c) Sporozoans

  22. Which of the following is NOT a common symptom of malaria caused by Plasmodium? a) Fever
    b) Muscle pain
    c) Abdominal pain
    d) Severe diarrhea

    Answer: d) Severe diarrhea

  23. Which of the following protozoa is NOT typically found in human intestines? a) Entamoeba histolytica
    b) Giardia lamblia
    c) Plasmodium falciparum
    d) Trichomonas vaginalis

    Answer: c) Plasmodium falciparum

  24. What is the primary mode of transmission for Toxoplasma gondii? a) Infected food
    b) Contact with feces of infected cats
    c) Mosquito bites
    d) Infected blood transfusions

    Answer: b) Contact with feces of infected cats

  25. Which group of protozoa uses cilia for movement? a) Flagellates
    b) Ciliates
    c) Sporozoans
    d) Amoeboids

    Answer: b) Ciliates

  26. How does the malaria-causing Plasmodium parasite enter the human body? a) Through ingestion of contaminated food
    b) By mosquito bite
    c) By direct contact with infected blood
    d) Through skin exposure to contaminated water

    Answer: b) By mosquito bite

  27. Which ecological role do protozoa play in nutrient cycling in freshwater ecosystems? a) They serve as primary producers
    b) They decompose detritus
    c) They contribute to nitrogen fixation
    d) They contribute to phosphorus cycling

    Answer: b) They decompose detritus

  28. Which protozoan parasite causes a disease called “Kala-azar”? a) Leishmania
    b) Trypanosoma cruzi
    c) Plasmodium
    d) Giardia lamblia

    Answer: a) Leishmania

  29. What are the main vectors for the transmission of Leishmania parasites? a) Mosquitoes
    b) Tsetse flies
    c) Sandflies
    d) Houseflies

    Answer: c) Sandflies

  30. What is a characteristic feature of amoeboid protozoa? a) Presence of flagella
    b) Presence of cilia
    c) Ability to form pseudopodia for movement
    d) Formation of spores

    Answer: c) Ability to form pseudopodia for movement

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