1.
Option A
2.
Option A
3.
Option A
4.
Roughage prevents us from constipation by helping in the easy movement of bowels.
5.
1. In case of a minor burn - wash the burnt area with cold water for some time and apply burn creams. 2. In case of deep burn - do not use water but cover with clean cloth.
6.
Option C
7.
Option B
8.
Option A
9.
A disease which that can be spread from one person to another is called as communicable disease.
10.
A vaccine is an inactivated form of bacteria or virus that is injected into the body to simulate an actual infection. Because the injected microorganisms are 'dead,' they don't cause a person to become sick. When vaccine is injected in the body, body cells produce a substance which kills the disease spreading germs. Thus body generates immunity against future attack of germs.
11.
1. Biodegradable wastes are taken care of. 2. Compost is used as organic manure. 3. Use of chemical fertilizers are minimized.
12.
Option C
13.
Polio, Tetanus, Hepatitis B, measles, mumps
14.
Option B
15.
Pollution is defined as “ the addition of unwanted and harmful substances called pollutants to the environment which adversely alters the natural quality of the environment”.
16.
Skin is effective barrier against germs attack on body. When wounds occur, germs may produce pus. This causes blood poisoning may lead to death. e.g.. any wound.
17.
Major benefits of water are: 1. Medium of transporting food substances and absorption of nutrients within the body. 2.Maintains body temperature. 3. Elimination of harmful substances in the form of urine and sweat and in controlling constipation.
18.
Option C
19.
Option B
20.
Trachoma and conjunctivitis.
