13) Which of the below is true about a complete digestive system? Group of answer choices it has only one opening it is less efficient at extracting energy from food than a gastrovascular cavity it...

13) Which of the below is true about a complete digestive system?

Group of answer choices

it has only one opening

it is less efficient at extracting energy from food than a gastrovascular cavity

it can also function as a hydrostatic skeleton

it allows food to be eaten while a previous meal is still being digested

Jun 11, 2022

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