Question Detail
Question
Which of the following animal groups is distinguished by the absence of a distinct digestive tract?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The document states that "All these animals have digestive tracts except Sponges." Sponges are simple multicellular organisms that filter feed, absorbing nutrients directly from water.
Hint
These are among the simplest multicellular animals, known for their porous bodies and filter-feeding.