> . Pheretima has calciferous glands which help in
excretion. It also has chloragogen cells which are
star-shaped and have excretory functions.
Palaemon has book gills which are the respiratory
organs and it also has green gland for
osmoregulation and excretion.
Palaemnaeus has book lungs as respiratory
organs and coxal glands for excretion.
Periplaneta has colleterial glands which are
associated with the female genital apparatus and
it also has uricase gland associated with excretion.
Although there is an ambiguity in the question,