Which group is incorrectly matched with its feeding mode or structure?

The group Porifera, commonly known as sponges, is indeed mismatched with the term "lophophores." Porifera are simple, filter-feeding organisms that rely on water flow through their porous bodies to obtain food particles, rather than using specialized structures like lophophores for feeding. Lophophores are tentacle-like structures used for feeding and are characteristic of certain phyla, particularly Bryozoa and Brachiopoda, which utilize these structures for capturing food from the water.

In contrast, the other groups listed are correctly matched with their respective feeding modes or structures. Nemertea utilizes a retractable proboscis to capture prey, Rotifera have a ciliated crown that helps them filter food from the water, and Cnidaria are equipped with tentacles that contain stinging cells (nematocysts) for capturing and immobilizing their prey. Understanding these relationships highlights the diversity of feeding strategies and adaptations found across different animal phyla.