Biology
Assertion (A): Hygiene is defined as the science and practice of maintaining good health.
Reason: (R): Hygiene can be maintained by taking vaccines and antibiotics regularly to keep a person away from diseases.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Hygiene
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Answer
A is True and R is False.
Reason — Hygiene involves practices like cleanliness, safe food and water handling, personal care, and sanitation. It is aimed at promoting and maintaining health and preventing disease.
Vaccines help in building immunity, and antibiotics are used to treat bacterial infections. These are medical measures, not hygiene practices. Hygiene includes actions like washing hands, bathing etc.
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Related Questions
Assertion (A): Gambusia is a kind of fish which should be introduced in ponds. These fishes enhance the oxygen content of the water.
Reason: (R): Gambusia fishes selectively devour mosquito larvae from the ponds. Hence used to control the growth of mosquitoes.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Assertion (A): Bacillary dysentery is caused due to infection by a protozoan which occurs frequently in children.
Reason: (R): Shigella is a kind of bacillus bacteria which causes bacillary dysentery.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Fill in the blanks:
(a) Taking stimulants and …………… are unhealthy habits.
(b) Physical exercise should be …………… and regular.
(c) Public drains and garbage must be covered with …………… powder or lime.
(d) …………… is often designated as public enemy no. 1.
(e) …………… is a parasite which lives on rat's skin.
Name the following :
(a) The bacterium which causes cholera.
(b) The liquid domestic wastes from the kitchen, toilet, etc.
(c) The chemical substances used to kill rats.
(d) The disease caused due to the inflammation of liver.
(e) The disease caused due to the bacilli bacteria released in tannery wastes from leather industries.