Class Notes NCERT Solutions for CBSE Students
NCERT 9th Class (CBSE) Science: Why Do We Fall Ill Quiz
22 Multiple Choice Questions related to NCERT 9th Class (CBSE) Science: Why Do We Fall Ill Quiz:
- Health means a state of physical, mental and social well-being.
- Symptoms of disease are the signs of a disease which indicates the presence of a particular disease.
- Those diseases which last for very short period of time are called acute diseases. Example, headache and cold.
- The organisms that spread or carry pathogens from one place to another, from infected person to healthy person is called vector. Example: mosquito, housefly etc.
