Enlist the main features of Aschelminthes and give examples.
The main features of Aschelminthes are: - (i) They are called roundworms as they appear circular in C.S. (ii) Free-living, aquatic, terrestrial or parasitic. (iii) The organization of the body is organ level. (iv) Bilaterally symmetrical animals. (v) They are triploblastic and pseudocoelomate. (vi) Alimentation is complete with the muscular or pharynx. (vii) Sexes are Separate. (viii) The body is covered by a cuticle. (ix) Fertilization is internal. (x) Example: - Filarial worm (Wuchereria), Ascaris, Pinworm (Enterobius) and Hookworm (Ancylostoma)
