A) absence of true coelom but presence of metamerism
B) presence of neither true coelom nor metamerism
C) presence of true coelom but absence of metamerism
D) presence of true coelom and metamerism (metamerisation)
Correct Answer: B
Solution :
Ascaris is an endoparasite of man. It inhabits the small intestine more frequently of children than of adults. The body is elongate, cylindrical and gradually tapering at both ends. There is no metameric segmentation. In As cans, between body wall and visceral organs is a spacious fluid filled cavity. This cavity is not true coelm as not lined by coelomic epithelium, and also not related with reproductive and excretory organs and developed from blastcoel. This body cavity is referred as pseudocoel.
You need to login to perform this action.
You will be redirected in
3 sec
