Question

Select the correct difference between a male and a female Ascaris worm.

	Male Ascaris	Female Ascaris
i.	Longer than female	Shorter than male
ii.	Posterior end is curved	Posterior end is straight
iii.	Cloaca absent	Cloaca is present

• A. i and ii only
• B. ii and iii only
• C. ii only
• D. iii only

Answer 1

The correct option is C ii only

Ascaris belongs to the phylum Aschelminthes. Ascaris is dioecious, which means it has separate sexes. Males and females are morphologically distinct. Females are longer than males. Posterior ends of males are hooked or curved while females have a straight posterior end. Cloaca is the last part of the rectum in males. It is located at the posterior end and receives both faeces and sperms. It is absent in females.