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Helps Students to be Active: Being alert during the Hygiene - [A Key to Healthy Life] class is a must for students to attain good marks; they can maintain the activeness with the help of Class 9 ICSE Biology notes as in it each and every topic is explained in a dynamic way.
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- It is important to refer to Class 9 Biology notes of the chapter Hygiene - [A Key to Healthy Life] as it provides many benefits, those benefits are...
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Define: (a) Health (b) Hygiene (c) Pathogen/germ (d) Vector (e) Contamination Answer (a) Health is the condition of the body of a person who depicts or portrays physical, mental, social and emotional fitness. (b) Hygiene is defined as the science and practice of maintaining good health. It requires caring of one's own body (personal hygiene) and ta...
Give suitable explanations for the following: (i) One should breathe by nose and never by mouth. (ii) Hands must be washed before eating food. (iii) Eating places must be kept free of flies. Answer (i) One should breathe by nose and never by mouth because nose contains hair and mucous to trap dust and micro-organisms, so that the inhaled air become...
How are cockroaches and rats harmful to humans? Answer Cockroaches and rats are common household pests. They are harmful to humans in the following ways: 1. Cockroaches eat and spoil food, paper and clothes. They are also suspected to be carriers of certain viral diseases, possibly including a cancer-causing virus. 2. Rats eat grains and other food...
Name the two types of dysentery and their causative germs and give one main precaution against them. Answer The table below depicts the two types of dysentery, their causatives and precautions:
Mention three symptoms of the disease Hepatitis. Answer The three symptoms of Hepatitis disease are: 1. Body ache 2. Eyes turn yellowish, due to the bile pigments – urine turns to deep yellow 3. Enlarged liver
Suggest any two methods of controlling flies. Answer The two methods of controlling flies are: 1. Elimination of breeding places of flies. 2. Spraying houses and breeding places of flies with insecticides.
List any three effective methods for controlling mosquitoes. Answer The effective methods for controlling mosquitoes are: 1. Elimination of breeding places for mosquitoes. 2. Spraying on stagnant water with Kerosene or some other greasy oil to kill larvae and pupae. Spraying DDT and other insecticides to kill adult mosquitoes. 3. Biological control...
Mention any three ways by which potable water can be contaminated. Answer Contamination of potable (drinking) water can occur in several ways such as: 1. Sewage, if improperly disposed, leaks into sub soil and may contaminate underground water supplies. 2. Urination and defecation near water bodies such as ponds, lakes and rivers 3. Contamination o...
Dec 26, 2023 · Answer: (i) Cleanliness, rest and sleep, and physical exercise are a part of personal hygiene. (ii) One must always breathe by the nose and never by the mouth. (iii) Fresh air brings oxygen into the living rooms. (iv) One must never put a sharp pointed object into the ear it may rupture the eardrum.
Aug 24, 2018 · APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 9 Biology Chapter 9 Chapter 15 Hygiene A Key To Healthy Life. You can download the Selina Concise Biology ICSE Solutions for Class 9 with Free PDF download option.
This is Session 1 of LIVE Online Class of Hygiene - A Key To Healthy Life of ICSE Class 9 Biology. In this session, Trisika Ma'am will teach you Hygiene - A ...
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Dysentery is caused by poor hygiene. Individuals can take measures to reduce their risk of infection by regularly washing their hands, especially before and after going to the toilet and preparing food and by drinking boiled water. Hepatitis. Spread by a virus, through contaminated water.
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Students through this unit learn about the general idea of personal hygiene, public hygiene and sanitation. It takes students through simple personal hygienic habits which can be adapted at the basic level and slowly approach social hygiene and sanitation.
