There are two types of adult worm of
Ascaris lumbricoides of which one is male and the other is female .
Adult Male Worm
1)
Shape – It is rounded and
tapers at both ends .
2)
Size – It measures about 15 to
25 cm. in length with a maximum diameter of
3 to 4 mm .
3)
Mouth – The mouth open s at the
anterior end . There are three finely toothed lips
one dorsal and two ventral .
4)
Tail – The tail end terminates
in a coil . The genital pore opens into the cloaca
from .which two curved copulatory spicules protrude
. In the cloaca , anus
opens with the ejaculatory duct .
5)
The digestive and reproductive
organs float inside the body cavity .
Adult Female
Worm
1)
Shape – It is rounded and
tapers at both ends .
2)
Size – It measures about 26 to
40 cm. in length with a maximum diameter of 5mm .
3)
Mouth – The mouth opens at the
anterior end . There are three finely toothed lips ,
one dorsal and two ventral .
4)
Tail – The tail end is straight
and tapering .
5)
The anus opens on the ventral
surface as a transverse slit .
6)
The digestive and reproductive
organs float inside the body cavity .
7)
The vulva opens mid ventral
aspect .
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