Which of the Following is an Example of Tissue-Organ Grade

Question

Which of the following is an example of tissue-organ grade of organization?
A)a flatworm
B)a jellyfish
C)a colonial protozoan,such as Volvox
D)a sponge

Accepted Answer

Flatworms (Platyhelminthes) exhibit a tissue-organ level of organization, meaning their bodies are composed of distinct tissues that form organs, unlike simpler organisms that may only display cellular or tissue-level organization.