What are Monogeneans commonly known as?
A) Flukes
B) Ectoparasites
C) Roundworms
D) Tapeworms
B) Ectoparasites
Monogenea belong to which phylum?
A) Nematoda
B) Platyhelminthes
C) Annelida
D) Arthropoda
B) Platyhelminthes
What type of host do Monogeneans primarily infect?
A) Mammals
B) Birds
C) Fish
D) Reptiles
C) Fish
Which structure is primarily used by Monogeneans for attachment to their host?
A) Suckers
B) Hooks
C) Proglottids
D) Tegument
A) Suckers
Monogeneans are primarily found in which habitat?
A) Freshwater
B) Marine environments
C) Terrestrial environments
D) All of the above
D) All of the above
What type of life cycle do Monogeneans exhibit?
A) Direct life cycle
B) Indirect life cycle
C) Complex life cycle
D) Simple life cycle
A) Direct life cycle
Monogeneans are primarily characterized by which of the following?
A) A segmented body
B) A distinct head
C) A single host life cycle
D) A complex nervous system
C) A single host life cycle
Which of the following structures is present in Monogeneans for locomotion?
A) Cilia
B) Flagella
C) Tentacles
D) Pseudopodia
A) Cilia
Which of the following is a common genus of Monogenea?
A) Taenia
B) Diphyllobothrium
C) Gyrodactylus
D) Schistosoma
C) Gyrodactylus
What is the primary reproductive method of Monogeneans?
A) Asexual reproduction
B) Binary fission
C) Sexual reproduction
D) Budding
C) Sexual reproduction
The eggs of Monogeneans typically develop into which larval stage?
A) Miracidium
B) Cercaria
C) Oncomiracidium
D) Metacercaria
C) Oncomiracidium
What is the function of the haptor in Monogeneans?
A) Feeding
B) Reproduction
C) Attachment
D) Locomotion
C) Attachment
Which of the following hosts can Monogeneans infect?
A) Only fish
B) Fish and amphibians
C) Fish and reptiles
D) Fish, amphibians, and reptiles
D) Fish, amphibians, and reptiles
Monogeneans are known to primarily infest which part of their host?
A) Internal organs
B) Skin and gills
C) Intestines
D) Muscles
B) Skin and gills
Which of the following is NOT a characteristic of Monogenea?
A) Free-living adults
B) Direct life cycle
C) Ectoparasitic lifestyle
D) Simple body structure
A) Free-living adults
The haptor of Monogeneans is equipped with which structures?
A) Sensory cells
B) Suckers and hooks
C) Gills
D) Tentacles
B) Suckers and hooks
Monogeneans are primarily classified based on their:
A) Morphology
B) Host specificity
C) Habitat
D) Feeding behavior
A) Morphology
Which of the following is a well-known Monogenean species that affects fish?
A) Clonorchis sinensis
B) Gyrodactylus salaris
C) Fasciola hepatica
D) Schistosoma japonicum
B) Gyrodactylus salaris
How do Monogeneans typically obtain nutrients?
A) Photosynthesis
B) Absorption through the skin
C) Ingestion of host tissues
D) Filter feeding
C) Ingestion of host tissues
Monogeneans are mostly found in which type of organisms?
A) Terrestrial vertebrates
B) Aquatic vertebrates
C) Invertebrates
D) None of the above
B) Aquatic vertebrates
Which of the following Monogeneans is known to cause gill disease in fish?
A) Diplozoon
B) Dactylogyrus
C) Echinostoma
D) Fasciola
B) Dactylogyrus
Which feature is unique to Monogenea among parasitic worms?
A) Their larval stage
B) Their attachment structures
C) Their reproductive strategy
D) Their body plan
B) Their attachment structures
The adult Monogenean typically lives for how long in the host?
A) A few days
B) Several weeks
C) Several months
D) Years
B) Several weeks
What type of body plan do Monogeneans exhibit?
A) Cylindrical
B) Flat and ribbon-like
C) Segmented
D) Spherical
B) Flat and ribbon-like
Which of the following best describes the eggs of Monogeneans?
A) Soft and unprotected
B) Hard-shelled and protected
C) Jelly-like and non-protected
D) Spiny and heavy
B) Hard-shelled and protected
Which Monogenean genus is known to exhibit high host specificity?
A) Gyrodactylus
B) Diplozoon
C) Dactylogyrus
D) Both A and C
D) Both A and C
What is the primary function of the reproductive structures in Monogeneans?
A) Nutrient absorption
B) Attachment to the host
C) Fertilization and egg production
D) Locomotion
C) Fertilization and egg production
Monogeneans primarily infect which part of fish?
A) Heart
B) Gills
C) Intestines
D) Liver
B) Gills
The larval form of Monogeneans that attaches to fish is called:
A) Oncomiracidium
B) Miracidium
C) Cercaria
D) Metacercaria
A) Oncomiracidium
Which of the following is a major impact of Monogeneans on their host?
A) Providing nutrients
B) Causing disease
C) Enhancing growth
D) Reducing predation
B) Causing disease