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Cestoda Morphology and Life Cycle

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Questions and Answers

Which of the following is NOT a morphologic form in the typical cestode life cycle?

Larval stage

Pupal stage (correct)

Egg

Adult worm

What is the name given to the embryonic stage of a cestode egg?

Oncosphere

Proglottid

Scolex

Hexacanth (correct)

What is the term used to describe the outer surface of an adult tapeworm through which it excretes waste products?

Scolex

Rostellum

Strobila

Tegument (correct)

Which of the following statements about adult tapeworms is NOT true?

They are unisexual (D) Signup and view all the answers

What is the name given to the distinct feature of some tapeworm species that is a fleshy extension of the scolex?

Rostellum (A) Signup and view all the answers

Which of the following statements about the life cycle of cestodes is true?

Human ingestion of an egg or larval stage results in an adult worm emerging in the intestine (B) Signup and view all the answers

Which of the following is NOT a distinct feature common to all adult tapeworms?

Presence of a digestive system (C) Signup and view all the answers

What is the term used to describe the cup-shaped structures present on the typical scolex of a tapeworm?

Suckers (C) Signup and view all the answers

Which of the following cestode species is known to exhibit auto-reinfection in its life cycle?

Hymenolepis nana (B) Signup and view all the answers

What term is used to describe the mature form of a tapeworm that is equipped with both male and female reproductive organs?

Strobila (C) Signup and view all the answers