Rostellum and hooks are absent in Taenia saginata.

Correct Option: C

Rostellum and hooks are absent in Taenia saginata.

Presence of canal system - a network of channels for water transport - is an important feature in sponges. Ascon type of canal is simplest in Porifera which brings in food, oxygen and carries away CO₂ and nitrogenous waste.

Correct Option: A

Presence of canal system - a network of channels for water transport - is an important feature in sponges. Ascon type of canal is simplest in Porifera which brings in food, oxygen and carries away CO₂ and nitrogenous waste.

The body of Taenia is ribbon like and is divided into segments called proglottids. Each proglottid has one or two sets of male and female reproductive organs.

Correct Option: D

The body of Taenia is ribbon like and is divided into segments called proglottids. Each proglottid has one or two sets of male and female reproductive organs.

Excretory system of Taenia consists of a pair of peculiar flame cells, which absorb the waste material from the body and discharges it through excretory duct.

Correct Option: A

Excretory system of Taenia consists of a pair of peculiar flame cells, which absorb the waste material from the body and discharges it through excretory duct.

Ascaris enters into the human by eating semi-cooked (improperly) cooked pork contaminated with Ascaris.

Correct Option: B

Ascaris enters into the human by eating semi-cooked (improperly) cooked pork contaminated with Ascaris.