Question: What Is Disease Class 9?

Why do we fall ill types of diseases?

It may be caused due to the attack of pathogens (virus, bacteria), lack of nutritious diet/balanced diet and lack of public health services.

The disease which lasts for only a short period of time is called Acute Disease.

For example: Influenza (Flu), Common cold, etc.

For example: TB, Cancer, etc..

Why do we fall ill Class 9 BYJU’s?

We fall ill because we live in an area with polluted surroundings or lack of personal hygiene. It is very important to adopt certain strategies to stay healthy and prevent diseases. One should remain active by exercising daily. Eating healthy helps in the prevention of diseases.

What are the 7 killer diseases?

When people think of the deadliest diseases in the world, their minds probably jump to the fast-acting, incurable ones that grab headlines from time to time. … Stroke. … Chronic obstructive pulmonary disease. … Trachea, bronchus, and lung cancers. … Diabetes mellitus. … Dehydration due to diarrheal diseases.

What is disease and its causes?

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They’re normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.

What are symptoms Class 9?

Answer: A symptom is a phenomenon that is experienced by the individual affected by the disease, while a sign is a phenomenon that can be detected by someone other than the individual affected by the disease. For example, anxiety, pain, and fatigue are all symptoms.

What are the six diseases?

Childhood mortality: six killer diseases and how to stop themPneumonia. Pneumonia, usually caused by a bacterial infection, is a disease in which the air sacs in the lungs become inflamed and fill up with fluid. … Diarrhoea. Diarrhoea is caused by an infection in the intestinal track. … Malaria. … Meningitis. … HIV. … Measles.

What are the causes of diseases Class 9?

Causes of disease Diseases can be caused due to various reasons like drinking unclean water or eating contaminated food, lack of nourishment to body, genetic differences carried from parents to children, etc. Therefore, cause of diseases is classified as either non infectious disease or infectious diseases.

What are vectors Class 9?

What is vectors? The organisms that carry the infectious agents from a sick person to a potential host or healthy person are called vector. These organisms are responsible for the spread of the diseases.

What are the 8 killer diseases?

This exposes our children to great risk of illness, disability and death due to eight childhood immunisable diseases (i.e. Polio, Measles, Tuberculosis, Diphtheria, Tetanus, Hepatitis B, Haemophilus influenzae type b and Whooping Cough).

What is Disease explain?

A disease is a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not due to any immediate external injury. Diseases are often known to be medical conditions that are associated with specific symptoms and signs.

What is disease Short answer?

Disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.

What are six killer diseases?

These six are the target diseases of WHO’s Expanded Programme on Immuni- zation (EPI), and of UNICEF’s Univer- sal Childhood Immunization (UCI); measles, poliomyelitis, diphtheria, pertussis (whooping cough), tetanus and tuberculosis.