Hi PLZ GIVE EXTRA QUESTIONS FOR CLASS 9 BIO CH- why do we fall ill AND tissues
Answers
Answer:
ok the question is here
if a baby is crying what can be the reason for it and how can you give relive to the baby ?
Explanation:
Answer:
Why Do we Fall Ill Class 9 Extra Questions Science Chapter 13
October 2, 2019 by Sastry CBSE
Why Do we Fall Ill Class 9 Extra Questions Science Chapter 13
Extra Questions for Class 9 Science Chapter 13 Why Do we Fall Ill
Why Do we Fall Ill Class 9 Extra Questions Very Short Answer Questions
Question 1.
What is meant by symptoms of a disease?
Answer:
The conditions in which a sick person experience headache, watering of eyes, loose motions, are collectively called the symptoms of a disease.
Question 2.
Define reservoir.
Answer:
A reservoir is defined as any person, animal, arthropod, plant, soil or substance in which an infectious agent lives and multiplies for its primary survival.
Question 3.
What is a source of infection?
Answer:
Person, animal, object or substance from which an infectious agent passes or is disseminated to the host is known as the source of infection.
Question 4.
How can we diagnose a disease?
Answer:
By laboratory tests.
Question 5.
What is community health?
Answer:
It is the personal health along with the environmental services for the importance of health of the community.
Question 6.
What does WHO stand for?
Answer:
World Health Organisation.
Question 7.
How can dehydration of the body be prevented?
Answer:
Dehydration can be prevented by intake of ORS (Oral Rehydration Solution).
Question 8.
How does WHO define health?
Answer:
WHO defines health as a state of complete physical, mental and social well-being and not merely an absence of disease or infirmity.
Question 9.
Classify diseases on the basis of their time of occurrence.
Answer:
Congenital diseases and acquired diseases.
Question 10.
What are congenital diseases?
Answer:
The diseases which are present from the time of birth and are hereditary are called congenital diseases