What are Trematodes commonly known as?
A) Roundworms
B) Flatworms
C) Flukes
D) Leeches C) Flukes
What type of body symmetry do Trematodes exhibit?
A) Radial symmetry
B) Bilateral symmetry
C) Asymmetry
D) Spherical symmetry B) Bilateral symmetry
Trematodes are primarily known for being:
A) Free-living
B) Parasitic
C) Photosynthetic
D) Decomposers B) Parasitic
Which of the following is a characteristic feature of Trematodes?
A) A hard outer shell
B) A segmented body
C) Suckers for attachment
D) Jointed appendages C) Suckers for attachment
What type of life cycle do most Trematodes have?
A) Direct life cycle
B) Indirect life cycle
C) Complex life cycle
D) Both A and B B) Indirect life cycle
Trematodes primarily infect which type of host?
A) Primary host
B) Intermediate host
C) Both primary and intermediate hosts
D) None of the above C) Both primary and intermediate hosts
Which organ is primarily used by Trematodes for attachment to their host?
A) Mouth
B) Sucker
C) Gills
D) Tentacles B) Sucker
The larvae of Trematodes are often referred to as:
A) Cysts
B) Metacercariae
C) Proglottids
D) Zygotes B) Metacercariae
Which of the following is a common disease caused by Trematodes?
A) Malaria
B) Schistosomiasis
C) Ascariasis
D) Giardiasis B) Schistosomiasis
Trematodes belong to which phylum?
A) Nematoda
B) Platyhelminthes
C) Annelida
D) Arthropoda B) Platyhelminthes
What is the primary host for the blood fluke Schistosoma?
A) Snails
B) Fish
C) Humans
D) Cattle C) Humans
Trematodes reproduce primarily through:
A) Budding
B) Binary fission
C) Sexual reproduction
D) Asexual reproduction C) Sexual reproduction
Which of the following structures is NOT found in Trematodes?
A) Scolex
B) Suckers
C) Tegument
D) Proglottids A) Scolex
What is the main purpose of the tegument in Trematodes?
A) Protection against the host’s immune system
B) Locomotion
C) Digestion
D) Reproduction A) Protection against the host’s immune system
Trematodes are typically found in:
A) Freshwater environments
B) Marine environments
C) Terrestrial environments
D) All of the above D) All of the above
Which class of Trematodes is known to infect the liver of their hosts?
A) Monogenea
B) Digenea
C) Cestoda
D) Turbellaria B) Digenea
The larvae of which Trematode stage can penetrate the skin of the host?
A) Cercaria
B) Metacercaria
C) Miracidium
D) Adult A) Cercaria
Trematodes that parasitize fish are commonly referred to as:
A) Liver flukes
B) Blood flukes
C) Fish flukes
D) Intestinal flukes C) Fish flukes
Which of the following Trematodes is known for causing liver damage?
A) Fasciola hepatica
B) Clonorchis sinensis
C) Schistosoma mansoni
D) Both A and B D) Both A and B
How do Trematodes typically obtain nutrients?
A) Photosynthesis
B) Absorption through the skin
C) Ingestion through a mouth
D) Filtration B) Absorption through the skin
Which life stage of Trematodes is free-swimming?
A) Egg
B) Metacercaria
C) Cercaria
D) Adult C) Cercaria
The term “digenetic” in Trematodes refers to:
A) Two hosts involved in the life cycle
B) A single host
C) Asexual reproduction
D) Parasitism A) Two hosts involved in the life cycle
What is the primary method of transmission for Trematodes to their definitive host?
A) Ingestion of contaminated food or water
B) Direct contact
C) Airborne transmission
D) Blood transfusion A) Ingestion of contaminated food or water
Which of the following is NOT a characteristic of Trematodes?
A) Body flattened dorsoventrally
B) Presence of a coelom
C) Lack of respiratory and circulatory systems
D) Complex life cycles B) Presence of a coelom
The intermediate host for many Trematodes is typically:
A) Fish
B) Snails
C) Amphibians
D) Mammals B) Snails
What is the primary form of respiration in Trematodes?
A) Gills
B) Skin diffusion
C) Lungs
D) Trachea B) Skin diffusion
Which of the following is a method of control for Trematode infections?
A) Vaccination
B) Improved sanitation
C) Antiparasitic drugs
D) Both B and C D) Both B and C
Trematodes are primarily found in which environments?
A) Aquatic
B) Terrestrial
C) Both aquatic and terrestrial
D) Aerial A) Aquatic
The adult stage of Trematodes typically resides in the:
A) Bloodstream
B) Intestines
C) Liver
D) All of the above D) All of the above
The reproductive structure in Trematodes is usually located in which part of the body?
A) Anterior end
B) Posterior end
C) Midbody
D) Throughout the body D) Throughout the body