What is the primary mode of nutrition in protozoa?
A) Autotrophic
B) Heterotrophic
C) Mixotrophic
D) Saprophytic
Answer: B) Heterotrophic
Which of the following is NOT a characteristic feature of protozoa?
A) Unicellular
B) Eukaryotic
C) Multicellular
D) Often motile
Answer: C) Multicellular
Which organelle in protozoa is responsible for locomotion?
A) Nucleus
B) Mitochondria
C) Flagellum
D) Ribosome
Answer: C) Flagellum
Malaria is caused by a protozoan of the genus:
A) Amoeba
B) Paramecium
C) Plasmodium
D) Giardia
Answer: C) Plasmodium
Which protozoan is responsible for causing sleeping sickness in humans?
A) Trypanosoma
B) Trichomonas
C) Entamoeba
D) Leishmania
Answer: A) Trypanosoma
Amoebic dysentery is caused by the protozoan:
A) Plasmodium
B) Entamoeba histolytica
C) Toxoplasma gondii
D) Trypanosoma cruzi
Answer: B) Entamoeba histolytica
Which group of protozoa is characterized by the presence of cilia for movement?
A) Rhizopoda
B) Ciliophora
C) Flagellata
D) Sporozoa
Answer: B) Ciliophora
The process of encystation in protozoa is primarily associated with:
A) Reproduction
B) Feeding
C) Protection during unfavorable conditions
D) Locomotion
Answer: C) Protection during unfavorable conditions
Which protozoan infection is often transmitted through contaminated water and causes severe diarrhea?
A) Toxoplasmosis
B) Giardiasis
C) Trypanosomiasis
D) Malaria
Answer: B) Giardiasis
The vector responsible for transmitting the parasite that causes African trypanosomiasis is:
A) Mosquito
B) Tsetse fly
C) Sandfly
D) Flea
Answer: B) Tsetse fly
Which protozoan is responsible for causing the sexually transmitted infection known as “trichomoniasis”?
A) Trypanosoma
B) Plasmodium
C) Trichomonas vaginalis
D) Leishmania
Answer: C) Trichomonas vaginalis
Which organelle in protozoa is involved in food storage and digestion?
A) Contractile vacuole
B) Nucleus
C) Golgi apparatus
D) Endoplasmic reticulum
Answer: A) Contractile vacuole
The protozoan responsible for causing Chagas disease is transmitted to humans through the bite of:
A) Mosquito
B) Tsetse fly
C) Reduviid bug (kissing bug)
D) Sandfly
Answer: C) Reduviid bug (kissing bug)
Which of the following protozoa is known for its unique calcium carbonate shell or test?
A) Paramecium
B) Foraminifera
C) Trypanosoma
D) Leishmania
Answer: B) Foraminifera
Which group of protozoa is characterized by having an undulating membrane that aids in locomotion?
A) Amoebas
B) Ciliates
C) Flagellates
D) Sporozoans
Answer: C) Flagellates
The protozoan responsible for causing toxoplasmosis can be transmitted to humans through contact with:
A) Infected soil
B) Contaminated water
C) Cat feces
D) Mosquito bites
Answer: C) Cat feces
Which protozoan is responsible for causing a disease known as “Leishmaniasis,” which can manifest as skin sores or more severe visceral symptoms?
A) Trypanosoma cruzi
B) Plasmodium falciparum
C) Leishmania spp.
D) Trichomonas vaginalis
Answer: C) Leishmania spp.
The protozoan responsible for causing “amoebic keratitis” primarily affects which part of the human body?
A) Lungs
B) Skin
C) Eyes
D) Intestines
Answer: C) Eyes
Which protozoan group includes organisms that are often called “water molds” and are responsible for causing diseases in fish and amphibians?
A) Apicomplexa
B) Euglenozoa
C) Oomycota
D) Parabasalids
Answer: C) Oomycota
Malaria, a disease caused by protozoa, is primarily transmitted to humans through the bite of which vector?
A) Tsetse fly
B) Mosquito
C) Sandfly
D) Flea
Answer: B) Mosquito