170 Questions
What term describes a preferred site where a parasite feeds or resides within or on a host?
Predilection site
Which life cycle strategy allows a parasite to be transmitted to the next host when the current host is eaten?
Trophic transmission
What term describes a site in or on a host which is not a normal location for the parasite?
Aberrant site
What is a potential advantage of a parasite having a complex life cycle involving more than one host?
Easier to avoid the host's immune system
What term describes a relationship where one organism benefits while the other is neither harmed nor benefited?
Commensalism
What is the defining characteristic of Leucochloridium paradoxum, the 'Zombie Snails' parasite?
It is an endoparasite that lives inside the snail.
What is the behavior exhibited by infected fish due to heavy infections or altered behavioral traits?
Swimming close to the water surface and exhibiting risky behavior.
How does Toxoplasma gondii reproduce and complete its life cycle?
It reproduces sexually in cats and asexually in rodents.
What is the phenomenon referred to as 'Fatal Feline Attraction'?
Rodents losing their fear of cats, making them easier prey.
In the context of Leucochloridium paradoxum, what role does the bird host play in the parasite's life cycle?
The bird host is attracted to the infected snail and consumes it, spreading the parasite further.
What type of life cycle does Dirofilaria immitis (dog heartworm) have?
Direct life cycle without a paratenic host
Which of the following statements about the life cycle of Toxocara canis is correct?
Toxocara canis has an indirect life cycle with a paratenic host
What is the key difference between sexual and asexual reproduction in parasites?
Sexual reproduction results in greater genetic diversity, while asexual reproduction lacks genetic diversity
What is the term used to describe arrested development in parasites that has a seasonal basis?
Hypobiosis
Which of the following is an example of a parasitic symbiotic relationship?
Endoparasitism, where one organism lives inside another and harms it
Which of the following statements about parasites is true?
Parasites reduce the biological fitness of their host to some extent.
What is the primary difference between an endoparasite and an ectoparasite?
An endoparasite lives inside its host, while an ectoparasite lives on the surface of its host.
Which of the following is NOT a mode of infection for parasites?
Skin penetration by larvae or cysts.
What is the role of a paratenic host in the life cycle of a parasite?
It is a non-required transport host in which no development occurs.
Which of the following describes a direct life cycle in parasites?
It requires only one host to complete the life cycle.
Which of the following is an example of an endoparasite?
A cestode platyhelminth living in the intestine of fish and mammals
What is the relationship between an organism that engages in phoresis and its host?
The organisms are nutritionally independent of each other and have a facultative association
Which of the following is an example of a facultative parasite?
The fungus Blastomyces dermatitidis
What is the relationship between an ectoparasite and its host?
The parasite lives on the surface of the host and derives all of its food from the host, which is harmed to some extent
Which of the following is an example of commensalism?
Two organisms that are nutritionally independent and have a facultative association
What behavior is commonly exhibited by animals infected with Anaplasma phagocytophilum?
Increased aggression
Which of the following is a primary characteristic of Ehrlichia bacteria infection in animals?
Enlarged lymph nodes
Which of the following parasites is classified as an ectoparasite?
Monogenea ectoparasitic flatworms
What is a common symptom of Heartworm parasitic roundworm infection in dogs?
Persistent coughing
Which of the following best describes the mode of transmission of tick-borne infections like Anaplasma phagocytophilum?
Infected tick bites
What is the genus of rickettsial bacteria transmitted to vertebrates by ticks?
Ehrlichia
Which bacterial infection affects white blood cells and is transmitted by the deer tick?
Anaplasma phagocytophilum
Which type of roundworm is spread through the bites of mosquitoes?
Heartworm
Which class of ectoparasites includes flatworms that are especially found on the skin, fins, and gills of fish?
Monogenea
Which organism is diagnosed microscopically from a deep skin scrape of an infected animal and is found in low numbers in healthy dogs?
Ectoparasitic mite
What is the primary mode of transmission for the parasitic roundworm Dirofilaria immitis, the causative agent of dog heartworm disease?
Transmission by infected mosquitoes during blood feeding
Which of the following is a key characteristic of the life cycle of the ectoparasitic flatworm Monogenea?
Undergoes a free-swimming larval stage before infecting the host
Which of the following is a common characteristic of ectoparasites such as ticks, mites, fleas, and lice?
They primarily feed on the host's blood or skin, residing on the exterior
What is the term for the relationship between Ehrlichia bacteria and a mammalian host?
Parasitism
What is the role of a paratenic host in the life cycle of the parasitic nematode Toxocara canis?
It provides a means for the parasite to be transmitted to the next host when the current host is eaten
Which of the following is a common mode of transmission for the intracellular bacteria Anaplasma phagocytophilum, the causative agent of anaplasmosis?
Vector-borne transmission by infected ticks during blood feeding
Which of the following best describes the feeding habit of ectoparasites like ticks, mites, fleas, and lice?
Hematophagous
Monogenea flatworms are primarily known for parasitizing which part of their host's body?
Gills
What type of parasite is Dirofilaria immitis, commonly known as heartworm in dogs?
Endoparasite
Anaplasma phagocytophilum causes a disease transmitted by which vector?
Tick
What is a primary characteristic of Ehrlichia bacteria infection in animals?
Fever, lethargy, and decreased appetite
Which of the following is an example of an ectoparasite?
Tick
What type of life cycle does Dirofilaria immitis (dog heartworm) have?
Indirect life cycle with one intermediate host
What is the relationship between Anaplasma phagocytophilum and its host?
Parasitism, where the parasite harms the host
Which of the following is an example of a parasitic symbiotic relationship?
Tapeworm and human host
Which of the following is a key characteristic of the Kinetoplastorida order of flagellated protists?
They are transmitted by biting insects and parasitize the blood
Which of these flagellated protists is known to cause the disease giardiasis in humans?
Giardia
Which of the following is a key characteristic of the Trypanosoma genus of flagellated protists?
They are parasites of the blood, generally transmitted by biting insects
Which of these flagellated protists is known to cause the disease histomoniasis, also called 'blackhead', in poultry?
Histomonas
Which of the following is a key characteristic of the Diplomonadorida order of flagellated protists?
They are predominantly found in the intestines of their hosts
Which of the following is the correct classification for the protozoan genus Giardia?
Subphylum Mastigophora, Class Diplomonadorida
Which of the following is a distinguishing characteristic of the protozoan genus Trypanosoma?
Transmitted by biting insects
What is the correct term for the subphylum classification of flagellated protozoa, which includes the genus Giardia?
Mastigophora
Which of the following is a genus of flagellated protozoa that is a parasite of poultry?
Histomonas
Which of the following is the correct classification for the protozoan genus Trypanosoma?
Subphylum Mastigophora, Class Kinetoplastida
Which of the following is a flagellated protozoan parasite that causes giardiasis in humans?
Giardia
Which of the following is a group of flagellated protozoans that includes the causative agents of African sleeping sickness and Chagas disease?
Kinetoplastida
Which of the following is a flagellated protozoan parasite that infects birds and causes histomoniasis (blackhead disease)?
Histomonas
Which of the following is a distinguishing feature of the Kinetoplastida group of flagellated protozoans?
Presence of a kinetoplast (a specialized region of the mitochondrion)
Which of the following is a characteristic of the Trypanosoma genus, which includes the causative agents of African sleeping sickness?
They have a single flagellum and are capable of antigenic variation
Which of the following is a key characteristic of Giardia?
Formation of cysts in the environment
What is the primary method of locomotion for Trypanosoma?
Flagella
Which protozoan parasite is characterized by chronic infections and the development of immunity?
Giardia
What differentiates Kinetoplastida from other protozoa in terms of their reproductive strategy?
Schizogony
In the context of protozoa, which process leads to the exponential increase in numbers and destruction of host cells?
Schizogony
Which protozoan parasite is known to cause giardiasis in humans?
Trypanosoma
What is the typical method of feeding for most protozoa?
Through a cytostome
Which of the following protozoa is a flagellate parasite?
Histomonas
Which of the following parasites is known to form cysts in the environment or in the host?
Giardia
What distinguishes the morphology of sporocysts between Eimeria and Goussia among Apicomplexans?
Differences in sporocyst morphology
Which of the following is a characteristic feature of Kinetoplastida?
All of the above
Which of the following protozoans is a causative agent of African sleeping sickness in humans?
Trypanosoma brucei
Which of the following protozoans is a common cause of giardiasis, a diarrheal disease in humans?
Giardia lamblia
Which of the following protozoans is a causative agent of histomoniasis, a disease affecting turkeys and other gallinaceous birds?
Histomonas meleagridis
Which of the following protozoans is a causative agent of Chagas disease, transmitted by triatomine bugs?
Trypanosoma cruzi
What is the primary characteristic used to classify protozoa according to the text?
Motility
Which phylum does Giardia belong to as mentioned in the text?
Metamonada
Which protozoan parasite is known to cause the disease 'blackhead' in poultry?
Histomonas
What is a common characteristic of Kinetoplastids like Trypanosoma as mentioned in the text?
Presence of kinetoplast
Which term refers to a eukaryotic organism that has cells with nuclei but is not an animal, plant, or fungus?
Protist
Which phylum includes organisms known for their locomotion by cilia, as discussed in the text?
Ciliophora
'Entamoeba' belongs to which group of protozoa as per the text?
'Amoebozoa'
'Neospora' is categorized under which phylum according to the text?
'Apicomplexa'
'Balantidium' is a representative of which group of protozoa discussed in the text?
'Ciliophora'
Which group of protozoa includes members classified based on their motility?
Euglenozoa- Kinetoplastea
What distinguishes Amoebozoa protists?
Ability to form pseudopods
Which group of organisms exhibit amitochondriate flagellates and amoeboflagellates?
Euglenozoa
What is a characteristic of locomotion for organisms in Phylum Ciliophora?
Movement by cilia
'Balantidium' belongs to which order of flagellated protists?
Kinetoplastorida
Which protozoan group predominantly exhibits amoeboid movement by pseudopodia?
'Entamoeba' group
Which group of protozoa is characterized by their locomotion using pseudopods?
Amoebozoa
Which phylum of protozoa exhibits unique motility through an anterior flagellum and a posterior flagellum, often referred to as 'euglenoid movement'?
Euglenozoa
Which of the following phyla of protozoa is primarily characterized by their use of cilia for movement?
Phylum Ciliophora
Which protozoan parasite is a representative of the phylum Ciliophora and is known for causing a disease called balantidiasis in humans?
Toxoplasma gondii
Which genus of protozoa belongs to the phylum Amoebozoa and includes species like Entamoeba histolytica, a pathogenic parasite that causes amoebiasis in humans?
Naegleria
What is a characteristic feature of Amoebozoa mentioned in the text?
Asexual reproduction through binary fission
Which phylum includes organisms like Trypanosoma cruzi that cause Chagas disease?
Phylum Kinetoplastida
What is a common feature of Euglenozoa (Excavates) as discussed in the text?
A genus of kinetoplastids
Which protozoan genus is specifically mentioned for causing histomoniasis in poultry?
Histomonas
In the context of parasitic protozoans, which organism belongs to Phylum Ciliophora?
Balantidium
What is the primary mode of reproduction for Balantidium coli, a ciliate parasite?
Conjugation
Which of the following protozoans is known to cause dysentery in humans?
Amoeba proteus
In the context of protozoa, what is a common feature of organisms classified under the phylum Ciliophora?
Presence of cilia for movement
Which of the following protozoans is commonly found as a commensal in the human intestine?
Balantidium coli
What distinguishes amoebae of the genus Entamoeba from other amoeboid protozoans in terms of pathogenicity?
Ability to form cysts for survival in harsh conditions
Which structure is common in protozoa for absorbing nutrients through their cell membranes?
Cytostome
Which prefix is added to the term 'zoite' to denote a form which feeds and grows?
Tropho-
Which protozoan form is characterized by rapid division?
Tachyzoite
What do Bradyzoites primarily do in terms of division?
Divide slowly
Which protozoan form can also be infective when two hosts are involved?
Merozoite
Which of the following protozoan parasites is known to cause balantidiasis in humans and other mammals?
Balantidium coli
Which protozoan phylum is characterized by locomotion using cilia?
Ciliophora
What is the primary mode of transmission for the protozoan parasite Balantidium coli?
Contaminated water
Which of the following protozoan groups includes the genus Entamoeba, known for causing amoebic dysentery?
Amoebozoa
Which of the following statements accurately describes the protozoan group Euglenozoa?
They are flagellated protists, including the genus Trypanosoma.
Which of the following is a key characteristic of the Amoebozoa protists?
They exhibit amoeboid movement by pseudopodia
Entamoeba, a genus of amoeboid protists, is classified under which group?
Amoebozoa
Which of the following is a distinguishing feature of the Euglenozoa group, also known as Excavates?
They have a kinetoplast structure
Balantidium, a genus of ciliated protists, is classified under which phylum?
Ciliophora
Which of the following statements about the phylum Ciliophora is correct?
They use cilia for locomotion
Which of the following protist groups is known for its diverse modes of locomotion, including pseudopodia, flagella, and gliding movements?
Euglenozoa
Which of the following protist groups includes members that are known to form cysts in the environment or in a host?
All of the above
Which of the following protist groups includes members that are known to be part of the normal microbiota and do not cause disease?
All of the above
Which of the following protist groups includes members that exhibit asexual reproduction through processes like binary fission, budding, and schizogony/multiple fission?
All of the above
Which of the following protist groups includes members that are known to be host-specific or have a broad spectrum of hosts, including zoonotic potential?
All of the above
Which of the following is a distinguishing feature of the Amoebozoa, as mentioned in the text?
Locomotion by pseudopods
What is a common feature of Euglenozoa (Excavates) as discussed in the text?
Amitochondriate flagellates
Which phylum includes organisms known for their locomotion by cilia, as discussed in the text?
Ciliophora
Which genus of protozoa belongs to the phylum Amoebozoa and includes species like Entamoeba histolytica, a pathogenic parasite that causes amoebiasis in humans?
Entamoeba
What is the primary method of locomotion for the flagellated protist Balantidium, which is classified under the phylum Ciliophora?
Cilia
Which protozoan genus is known to cause a parasitic disease in humans, pigs, and other mammals called balantidiasis?
Entamoeba
What is the primary mode of locomotion for organisms classified under Phylum Ciliophora?
Cilia
Which phylum of protozoa includes organisms known for their motility through an anterior and posterior flagellum, often referred to as 'euglenoid movement'?
Euglenozoa
Balantidium coli, a parasitic ciliate, is known to cause which disease in humans and pigs?
Balantidiasis
Which genus of amoeboid protists is known to include species causing diseases in humans such as amoebic dysentery?
Entamoeba
Which phylum is characterized by the presence of pseudopods for locomotion and feeding?
Amoebozoa
Which of the following protist groups exhibits a unique form of locomotion called 'euglenoid movement'?
Euglenozoa
Balantidium coli, a ciliate parasite, is known to cause which disease in humans and other mammals?
Balantidiasis
Which of the following genera belongs to the phylum Amoebozoa and includes the pathogenic species Entamoeba histolytica?
Entamoeba
Which phylum of protozoa is characterized by the presence of cilia for locomotion?
Ciliophora
Which of the following is a characteristic feature of the Amoebozoa?
They exhibit amoeboid movement.
Which of the following protozoans is classified under the phylum Euglenozoa (Excavates)?
Trypanosoma brucei
Which of the following statements about the phylum Ciliophora (ciliates) is correct?
They use cilia for locomotion and feeding.
Which of the following protozoans is known to cause balantidiasis, a disease of the gastrointestinal tract?
Balantidium coli
Which of the following protozoans is a causative agent of amoebic dysentery?
Entamoeba histolytica
Which of the following is a characteristic feature of the Amoebozoa group?
Locomotion by means of pseudopodia
Which of the following protist groups includes the genus Entamoeba, known for causing amoebic dysentery?
Amoebozoa
Which of the following is a distinguishing feature of the Euglenozoa group, also known as Excavates?
Possession of a kinetoplast structure
Which of the following protozoan groups is known for its locomotion by cilia?
Ciliophora
Which of the following is a ciliated protozoan parasite that can cause balantidiasis in humans and other mammals?
Balantidium coli
Which of the following is a characteristic feature of the Amoebozoa group?
Locomotion by means of pseudopods
Which of the following is a key characteristic of the Euglenozoa (Excavates) group?
Possession of a kinetoplast
Which phylum includes organisms known for their locomotion by cilia?
Ciliophora
Which of the following protozoan groups does Balantidium belong to?
Ciliophora
Which group of protozoa does the genus Entamoeba, known for causing amoebic dysentery, belong to?
Amoebozoa
Which protozoan phylum is characterized by locomotion using cilia?
Ciliophora
Which of the following protozoans is commonly found as a commensal in the human intestine?
Entamoeba histolytica
What is the primary mode of reproduction for Balantidium coli, a ciliate parasite?
Binary fission
Which of the following is a characteristic feature of the Kinetoplastida order of flagellated protists?
Presence of a kinetoplast
Which of the following is an example of a parasitic symbiotic relationship?
Cryptobia in the stomach of lumpfish
Which protozoan group predominantly exhibits amoeboid movement by pseudopodia?
Amoebozoa
Which of the following is an example of commensalism involving a protozoan?
Entamoeba in the human intestine
Which protozoan parasite is a representative of the phylum Ciliophora and is known for causing a disease called balantidiasis in humans?
Balantidium coli
Which of the following protist groups includes members that are known to be part of the normal microbiota and do not cause disease?
Ciliophora
Which phylum does Giardia belong to as mentioned in the text?
The text does not mention the phylum of Giardia
Test your knowledge on key concepts in parasitology such as ectoparasites, endoparasites, and how parasites use their hosts for survival. Explore different modes of infection including oral transmission, spores in the environment, and larvae in intermediate and primary hosts.
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