Hygiene a Key to Healthy Life
ICSE · Class 9 · Biology
Flashcards for Hygiene a Key to Healthy Life — ICSE Class 9 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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See them allWhat is hygiene?
Answer
Hygiene is defined as the science and practice of maintaining good health. It includes caring for one's own body (personal hygiene) and taking proper care of surroundings (social hygiene).
List the four major aspects of personal hygiene.
Answer
The four major aspects of personal hygiene are: 1. Cleanliness, 2. Physical exercise, 3. Rest and sleep, 4. Healthy habits.
Why should we always breathe through the nose and not through the mouth?
Answer
Breathing through the nose is important because the nose filters, warms, and moistens the air before it reaches the lungs. It also prevents direct entry of dust, germs, and other harmful particles int…
How many hours of continuous undisturbed sleep is sufficient for adults?
Answer
For adults, 6-7 hours of continuous undisturbed sleep is sufficient for proper rest and recovery.
What is a vector in the context of disease transmission?
Answer
A vector is any agent that acts as an intermediate carrier of the pathogen. Examples include insects like mosquitoes, flies, and cockroaches that carry disease-causing germs from one place to another.
Name the three insects considered as the worst public enemies and why.
Answer
The three insects are: 1. Houseflies, 2. Mosquitoes, 3. Cockroaches. They are considered worst public enemies because they spread numerous diseases and contaminate food and living spaces.
How does a housefly spread diseases? List three ways.
Answer
Houseflies spread diseases in three ways: 1. Hairy body and legs pick up filth containing germs from dirty places, 2. Pouring out saliva and vomiting contaminated food on our food, 3. Depositing excre…
Which mosquito spreads malaria and what is the causative agent?
Answer
Anopheles mosquito spreads malaria. The causative agent is a protozoan called Plasmodium.
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