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NEET 2008
Exam
NEET
Year
2008
Subject
Zoology
Chapter
Human Health and Diseases

NEET 2008 · Zoology · Human Health and Diseases

Ascaris is characterised by

Ascaris is characterised by

Options

  1. Aabsence of true coelom but presence of metamerism
  2. Bpresence of neither true coelom nor metamerism
  3. Cpresence of true coelom but absence of metamerism
  4. Dpresence of true coelom and metamerism (metamerisation)

Correct answer

B. presence of neither true coelom nor metamerism

Step-by-step 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 Ascaris between body wall and visceral organs is a spacious fluid filled cavity. This cavity is not true coelom as it is not lined by coelomic epithelium, has no relation with reproductive and excretory organs and develops from blastocoel. This body cavity is referred pseudocoel.
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