Page 302 - New Medley 5 Semester 1

AT ONE GO

m Disease is an illness that affects the health of a person.
m Communicable diseases spread from one person to another and are caused by germs.

m Non-communicable diseases do not spread from one person to another.
m Diseases caused due to deficiency of a particular nutrient are called nutritional deficiency diseases.
m Many diseases are caused due to excessive intake of food, vitamins and minerals.

REMEMBER THESE TERMS

Microorganisms : Tiny organisms that are or microbes seen under a microscope only
Microscope : An instrument that shows enlarged view of a thing
Hypervitaminosis : A condition arising due to excess of vitamins in the body

Check Your Study

A. Tick () the correct answers.
1. Cholera is caused by

(a) Bacteria (b) Fungi

(c) Virus (d) Stale food

2. Sleeping sickness and dysentery are caused by

(a) Viruses (b) Protozoa

(c) Fungi (d) Bacteria

3. Chickenpox, AIDS and polio are caused by
(a) Bacteria (b) Fungi

(c) Viruses (d) Protozoa

4. Deficiency of this vitamin causes night blindness.

(a) Vitamin A (b) Vitamin B

(c) Vitamin C (d) Vitamin D

B. Write True or False.
1. Microorganisms can be seen with the naked eye.

2. Immunity is the ability of our body to recognise and destroy germs.

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