Write the general characters of the phylum Aschelminthes. Mention any

1.	Write the general characters of the phylum Aschelminthes. Mention any two examples.
Answer» Body is bilaterally symmetrical and triplo blastic. Body wall shows syncytial nature. Body is vermiform, cylindrical without a definite head. Cuticle is tough and resistant. The body cavity is a false coelom, (pseudocoelomate) and lies between body wall and the digestive tract. Digestive system is complete with mouth and anus. Circulatory & respiratory systems are absent. Sexes are always separate, exhibit sexual dimorphism and show Simple or complex life cycle. Excretory system shows a pair of longitudinal excretory canals with an excretory pore. Examples Ascaris lumbricoides (roundworm) Ancylostoma duodenale (hookworm)

Write the general characters of the phylum Aschelminthes. Mention any two examples.

Answer»

Body is bilaterally symmetrical and triplo blastic. Body wall shows syncytial nature.
Body is vermiform, cylindrical without a definite head.
Cuticle is tough and resistant.
The body cavity is a false coelom, (pseudocoelomate) and lies between body wall and the digestive tract.
Digestive system is complete with mouth and anus.
Circulatory & respiratory systems are absent.
Sexes are always separate, exhibit sexual dimorphism and show Simple or complex life cycle.
Excretory system shows a pair of longitudinal excretory canals with an excretory pore.

Examples