Science 5 - Unit-4 Health and Sickness
Key Point to Remember!- When disease-causing micro-organisms attack the human body, they cause infection and disease.
- Micro-organisms can enter the human body through air, water, food, cuts or wounds, etc and cause infections.
- We can avoid infections by using boiled or filtered water or by washing our hands before meals and after using the toilet, etc.
Solved Excercise (Questions / Answers)
A: Answer the following questions.
Q.1: What is an infection?
Ans: An infection occurs when micro-organisms enter your body and cause disease.
Q.2: In how many ways can microorganisms enter the human body. Discuss briefly using a bubble map.
Ans: Microorganism can be entered into the human body in the following ways.
- Through direct or indirect contact
- Through Air, Water, foods
- Through Animals or insects
- Through cuts and wounds
Q.3: What are some possible ways to avoid infections?
Ans: Here are some possible ways to avoid infections.
- Washing Hands
- Keeping food covered
- Use boiled or filtered water
- Bandage cuts and scratches
Q.4: OBserve the diagram below and answer what would happen if any link of the chain is broken.
Ans:
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