A)the nitrogenous waste of crustaceans is excreted by the green glands and ion diffusion takes place by diffusion across thin areas of cuticle and the gills.
B)both ion balance and elimination of nitrogenous wastes is managed by the green glands.
C)hydrostatic pressure in the green glands forces fluid into the hemocoel and both ions,and nitrogenous wastes diffuse across thin areas of cuticle and the gills.
D)None of the choices is correct.
E)the nitrogenous waste of crustaceans is excreted by diffusion across thin areas of cuticle and the gills,while the so-called excretory organs regulate ion composition of the hemolymph.

A)second maxillae.
B)caudal furca.
C)third maxilliped.
D)first walking leg.
E)first swimmeret.

A)They possess a telson tail
B)Only crustaceans have two pairs of antennae
C)Only crustaceans have chitinous exoskeletons
D)Only Crustacea possess a two-part body plan of cephalothorax and abdomen
E)A hemocoel is only found in Crustacea