Define Features of male and female ascaris lumbricoides?

i)  Ascaris  lumbricoides is  commonly called  round worm.

ii)  Body  is elongated, cylindrical,  tapering at  both ends.

iii)  Body surface  is marked with four longitudinal  lilies, one mid-dorsa!,  one midventral and two  lateral  lines.

iv)  Mouth is provided with  three  lips (i) a median dorsal  lip and  (ii) a pair of  symmetrical  sub medial ventral lips.

v)  Sexes are separate and sexual  dimorphism  is well  marked.

vi)  Male is smaller  than female and measures  15 to 31cm in  length with posterior end curved ventrally.

vii)  Female is large, measuring  a length of 20 to 35 cm with posterior end  straight arid blunt.

 viii) Male has single testis and seminal vesicle. Seminal  vesicle  leads to the exterior  via an  ejaculdtory duct located alongside the anus. It  is also provided at the  posterior end with a pair of curved  spicules  know  as penial setae which  are the  copulatory organs. Males also possess pre- and post-anal papillae, which  are  lacking  in female.

ix)  The female has 2 ovaries, 2 oviducts and 2 uteri joining at a single vagina and opening through a  gonopore also called genital aperture which  lies at a distance of about one-third of the  length  of the body from  the anterior end.

x)  Excretory pore is small and  lies on  the ventral side about 2 mm  away from  [lie anterior  end.

xi)  Life cycle is simple and monogenetic.  No secondary host is involved.