Zigya Logo

Chapter Chosen

Human Health and Disease

Book Chosen

Biology

Subject Chosen

Biology

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Ascaris is characterised by 

  • 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) 


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.


What is the significance of ‘Typhoid Mary’ ?

Typhoid Mary was a Typhoid carrier who continued to spread typhoid for several years through food she prepared.

Name three important aspects to maintain good health.

(i) Balanced diet (ii) Personal hygiene and (iii) Regular exercise.

List advantages of good health.

Healthy people are more efficient and productive. good health also brings prosperity and people live long. It also reduces infant and maternal mortality.

What is health ?

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

What is disease ?

Malfunctioning of one or more organs characterised by signs and symptoms is called disease.