What is the primary habitat of Turbellaria?
A) Marine
B) Freshwater
C) Terrestrial
D) All of the above D) All of the above
Which type of body symmetry do Turbellarians exhibit?
A) Bilateral symmetry
B) Radial symmetry
C) Asymmetry
D) Spherical symmetry A) Bilateral symmetry
What is the primary mode of locomotion for most Turbellarians?
A) Swimming
B) Crawling using cilia
C) Jet propulsion
D) Burrowing B) Crawling using cilia
Turbellarians primarily feed on:
A) Algae
B) Detritus
C) Small invertebrates
D) All of the above D) All of the above
What type of digestive system do Turbellarians possess?
A) Complete digestive system
B) Incomplete digestive system
C) No digestive system
D) Gastrovascular cavity B) Incomplete digestive system
Which structure is responsible for excretion in Turbellarians?
A) Flame cells
B) Nephridia
C) Kidneys
D) Gastrovascular cavity A) Flame cells
Which of the following is a characteristic feature of Turbellarians?
A) Presence of a coelom
B) A solid body without body cavities
C) Segmented body
D) Presence of a hard shell B) A solid body without body cavities
What is the reproductive method primarily used by Turbellarians?
A) Asexual reproduction
B) Sexual reproduction
C) Both asexual and sexual reproduction
D) Budding only C) Both asexual and sexual reproduction
Which of the following is an example of a Turbellarian?
A) Planaria
B) Schistosoma
C) Taenia
D) Clonorchis A) Planaria
The nervous system of Turbellarians is characterized by:
A) A centralized brain and nerve cords
B) A simple nerve net
C) No nervous system
D) A complex brain with lobes A) A centralized brain and nerve cords
The body surface of Turbellarians is covered by:
A) Scales
B) Cilia
C) Hair
D) Shells B) Cilia
Turbellarians are known to be:
A) Parasitic
B) Free-living
C) Mutualistic
D) Commensal B) Free-living
The most common method of locomotion in Turbellarians involves:
A) Ciliary movement
B) Swimming with fins
C) Tentacle contraction
D) Using a muscular foot A) Ciliary movement
Which of the following organ systems is well developed in Turbellarians?
A) Circulatory system
B) Respiratory system
C) Excretory system
D) Skeletal system C) Excretory system
What is the role of the flame cells in Turbellarians?
A) Respiration
B) Digestion
C) Excretion
D) Reproduction C) Excretion
Which class of Platyhelminthes does Turbellaria belong to?
A) Monogenea
B) Trematoda
C) Cestoda
D) Turbellaria D) Turbellaria
Turbellarians are primarily:
A) Carnivorous
B) Herbivorous
C) Omnivorous
D) Detritivorous C) Omnivorous
Which of the following features is NOT found in Turbellarians?
A) Pharynx
B) Eyespots
C) Segmented body
D) Parenchyma C) Segmented body
Turbellarians are known for their ability to:
A) Regenerate lost body parts
B) Fly
C) Live in extreme conditions
D) Change colors A) Regenerate lost body parts
Which sensory structure is commonly found in Turbellarians?
A) Statocysts
B) Compound eyes
C) Eyespots
D) Tentacles C) Eyespots
What type of reproductive strategy do many Turbellarians exhibit?
A) Parthenogenesis
B) Fragmentation
C) External fertilization
D) Internal fertilization B) Fragmentation
Turbellarians can typically be found in which environment?
A) Deep ocean trenches
B) Desert
C) Freshwater and marine environments
D) Underground caves C) Freshwater and marine environments
The body of a Turbellarian is primarily made up of:
A) Muscle tissue
B) Connective tissue
C) Epithelial tissue
D) Acoelomate tissue D) Acoelomate tissue
The mouth of a Turbellarian is typically located on the:
A) Anterior end
B) Posterior end
C) Dorsal surface
D) Ventral surface D) Ventral surface
Which of the following is NOT a function of cilia in Turbellarians?
A) Movement
B) Respiration
C) Feeding
D) Sensory detection B) Respiration
Which of the following statements about Turbellarians is true?
A) They are exclusively parasitic.
B) They have complex body systems.
C) They are primarily free-living organisms.
D) They lack nervous systems. C) They are primarily free-living organisms.
What is the role of the pharynx in Turbellarians?
A) Excretion
B) Digestion
C) Respiration
D) Feeding D) Feeding
Turbellarians are often characterized by a:
A) Complex body structure
B) Simple body structure
C) Rigid skeleton
D) Highly segmented body B) Simple body structure
The main function of the ciliated epidermis in Turbellarians is to:
A) Aid in respiration
B) Facilitate locomotion
C) Provide structural support
D) Act as a digestive surface B) Facilitate locomotion
Which of the following is an ecological role of Turbellarians?
A) Predator of small organisms
B) Prey for larger animals
C) Decomposers in the ecosystem
D) All of the above D) All of the above