CAUSES OF DISEASES IN BIOLOGY CH - 13

1.	CAUSES OF DISEASES IN BIOLOGY CH - 13
Answer» DISEASE : • Disease is the sickness which is caused by specific symptoms. • It AFFECTS the ORGANS and tissues of the body. • Examples : typhoid, cholera and tuberlucosis. • There are two types of diseases : a) INFECTIOUS disease. b) NON infectious disease. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ CAUSES OF DISEASES : $\leadsto$ Diseases are caused by bacteria, fungi, VIRUSES, parasites etc. • Diseases are caused by microorganisms. • Some diseases causing agents are : HIV, amoeba, Hepatitis viruses etc. • Some harmful diseases can cause death. ★ Infectious diseases : Diseases which are spread by a person to another person is called as infectious diseases. ★ Non Infectious diseases : The diseases which are caused by pathogens are called as non Infectious disease. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Answer»

DISEASE :

• Disease is the sickness which is caused by specific symptoms.

• It AFFECTS the ORGANS and tissues of the body.

• Examples : typhoid, cholera and tuberlucosis.

• There are two types of diseases :

a) INFECTIOUS disease.

b) NON infectious disease.

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CAUSES OF DISEASES :

$\leadsto$ Diseases are caused by bacteria, fungi, VIRUSES, parasites etc.

• Diseases are caused by microorganisms.

• Some diseases causing agents are : HIV, amoeba, Hepatitis viruses etc.

• Some harmful diseases can cause death.

★ Infectious diseases : Diseases which are spread by a person to another person is called as infectious diseases.

★ Non Infectious diseases : The diseases which are caused by pathogens are called as non Infectious disease.

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