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Trematode Life Cycle

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Questions and Answers

What is the characteristic of all Trematode species in terms of their development?

They develop in two living organisms (correct)

They develop in three living organisms

They develop in a single living organism

They develop in a non-living organism

What is the usual fate of the eggs liberated by the definitive host?

They pass to water (correct)

They are excreted into the air

They are stored in the definitive host's body

They are consumed by the intermediate host

What is the name of the ciliated embryo that develops from the egg?

Metacercaria

Cercaria

Miracidium (correct)

Larval stage

What is the role of the second intermediate host in the life cycle of some flukes?

It is required for the transformation of cercaria into metacercaria Signup and view all the answers

What is the final habitat of the adult worms?

Definitive host Signup and view all the answers

What is the fate of the cercariae that enter the second intermediate host?

They transform into metacercaria Signup and view all the answers

What is the function of the neck in the adult cestode?

The growth zone for proglottids Signup and view all the answers

What is the characteristic of mature proglottids?

They are hermaphrodite and have both male and female reproductive organs Signup and view all the answers

Why do cestodes lack a gastrointestinal tract?

Because they absorb already digested nutrients Signup and view all the answers

What is the function of the scolex in the adult cestode?

To attach to the host Signup and view all the answers

What is the characteristic of gravid proglottids?

They contain a uterus filled with fertilized eggs Signup and view all the answers

What is a characteristic shared by all tapeworms?

They are hermaphrodites Signup and view all the answers