ï»¿ Ascaris is characterised byÂ  from Biology Human Health and Disease Class 12 Nagaland Board

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Ascaris is characterised byÂ

• the absence of true coelom but the presence of metamerism

• the presence of neither true coelom nor metamerism

• the presence of true coelom but the absence of metamerism

• the presence of true coelom and metamerism (memorisation)Â

B.

the presence of neither true coelom nor metamerism

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 the 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.

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 the 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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What is disease ?

Malfunctioning of one or more organs characterised by signs and symptoms is called disease.
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Name three important aspects to maintain good health.

(i) Balanced diet (ii) Personal hygiene and (iii) Regular exercise.
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What is health ?

It is a state of complete, physical, mental and social well being of a person.
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