How many of the following are the general characters of Aschelminthes?
(a) They exhibit sexual dimorphism.
(b) They may be parasitic in plants and animals.
(c) Flame cells help in osmoregulation and excretion.
(d) Alimentary canal is incomplete with a muscular pharynx.
(e) Often males are longer than females.
The features of Aschelminthes include;
Flame cells are absent (It is a feature of Platyhelminthes).