Which of the following characteristics in an organism would indicate that lacks a coelom?
A) It is triploblastic.
B) It has bilateral symmetry.
C) It possesses sensory structures at its anterior end.
D) Muscular activity of its digestive system distorts the body wall.

Question

Quizplus · Accepted Answer

Organisms lacking a coelom (acoelomates) do not have a fluid-filled body cavity between the digestive tract and the body wall. Therefore, muscular activity of the digestive system can distort the body wall, as there is no coelomic cavity to absorb and distribute the forces generated by such activity.

Which of the Following Characteristics in an Organism Would Indicate