12 Questions
What is the primary mode of locomotion for most turbellarians?
Gliding across surfaces using a ciliated epidermis
What is the function of rhabdites in turbellarians?
To produce a protective mucous sheath around the body
Which class of flatworms includes the free-living and some symbiotic and parasitic forms?
Turbellaria
What is the primary habitat for freshwater planarians?
Both a and b
Which class of flatworms is primarily composed of ectoparasites?
Monogenea
What is the primary function of dual-gland adhesive organs in the epidermis of turbellarians?
To allow them to attach and detach from surfaces quickly
What is the function of the tegument in parasitic flatworms?
It helps the flatworm avoid the host's immune system and resist digestive juices.
Which of the following statements about planarians is true?
They detect food using chemoreceptors and entangle prey in mucous secretions.
What is the significance of the syncytial nature of the tegument in parasitic flatworms?
It may render the tegument more resistant due to the lack of cell junctions.
Which of the following statements about the planarian digestive system is incorrect?
The intestine has a single, unbranched trunk.
How do planarians feed on their prey?
They grip the prey with their anterior end, wrap around it, extend the pharynx, and suck up food in small amounts.
What is the primary function of the tegument in tapeworms?
It absorbs nutrients from the host's digestive cavity.
Learn about Phylum Platyhelminthes, commonly known as flatworms. Discover their diverse body structures, sizes, and habitats, ranging from the tiny to several meters in length. Explore the characteristics of free-living and parasitic flatworms within this phylum.
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