Question

Gills are also called as ctenidia and have both respiratory and excretory functions.

Therefore, are the gills stinging cells?

Answer 1

Gills are called ctenidia in mollusks and they only act as respiratory organs and not the excretory organs. Gills are present fishes can act as both respiratory as well as excretory organs. Gills are not the stinging cells. Stinging cells are present for the defense purpose or to capture prey.