Question

Hepatic portal system has evolved in protochordates

• A. Hemichordates
• B. Urochordates
• C. Cephalochordates
• D. All of the above

Answer 1

The correct option is C Cephalochordates

Hepatic portal system is responsible for directly carrying blood from the digestive system to the liver. It is present in higher chordates.

A) Hemichordates are a part of protochordates but do not have a hepatic portal system as circulatory system is of open type.

B) Urochordates have a well developed closed circulatory system but lack a hepatic portal system.

C) Cephalochordates have a hepatic portal system.

So, the correct answer is 'Cephalochordates'.