An advantage of a complete digestive system over a gastrovascular cavity is that the complete system

Question

Quizplus · Accepted Answer

A complete digestive system allows for specialized functions in specialized regions, such as the stomach for mechanical digestion and the small intestine for nutrient absorption. This specialization is not possible in a gastrovascular cavity, which has a more generalized function.

Answer: C 
 Digestive enzymes in a complete digestive system can be more specific to the type of food being digested, which allows for more efficient digestion and absorption. In a gastrovascular cavity, the digestive enzymes are more generalized and not as specific.

Answer: D 
 The extensive branching in a complete digestive system allows for a greater surface area for nutrient absorption. This increases the efficiency of digestion and absorption compared to a gastrovascular cavity, which has limited branching and surface area.

Therefore, the correct choices are B, C and D.

An Advantage of a Complete Digestive System Over a Gastrovascular