Question

A complete digestive system has

• A. Single opening that serves as both mouth and anus
• B. Two openings, one as mouth and other as anus
• C. Single opening that acts as mouth only
• D. Two openings, both act as mouth as well as anus

Answer 1

Answer: (B)

Digestive tract with two openings, mouth for ingestion and anus for egestion is known as complete digestive system.