Answer the following in short: [7*2=14]
1. What role does social machinery play in the field of hygiene?
2. Why is washing of hands before and after meal essential?
3. How can you control the spread of infectious diseases?
4. All living organisms adjust to change in the environment. Justify the statements with examples.
5. How do you aquatic plant protects their bodies from decay while living in water?
6. Write the importance of blood transfusion.
7. Why is blood group ‘O’ called the universal donor?
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Answers
Answer:
1=A social machine is an environment comprising humans and technology interacting and producing outputs or action which would not be possible without both parties present. Early computing machinery was used to establish the US Social Security Administration.09-Dec-2020
2=Washing your hands before eating a meal is a simple and effective method of infection prevention. When you eat without washing your hands, the bacteria and germs that are left on your fingers and palms can be transferred to the inside of your mouth. This can cause illnesses and infections.
3=Wash your hands often. ...
Get vaccinated. ...
Use antibiotics sensibly. ...
4=. All living organisms adjust to change in the environment. Justify the statements with examples.
5=Mucilage protects the plant body from decay underwater. Plants which grow on water is called hydrophytes or aquatic plants. In aquatic plants entire body is covered with mucilage
6=Your blood carries oxygen and nutrients to all parts of your body. Blood transfusions replace blood that is lost through surgery or injury or provide it if your body is not making blood properly. You may need a blood transfusion if you have anemia, sickle cell disease, a bleeding disorder such as hemophilia, or cancer
7=Type O-negative blood does not have any antigens. It is called the "universal donor" type because it is compatible with any blood type.
Answer:
1. ans A social machine is an environment comprising humans and technology interacting and producing outputs or action which would not be possible without both parties present. Early computing machinery was used to establish the US Social Security Administration.