Health The Ultimate Treasure Class 8 Short Question Answer

Health The Ultimate Treasure Class 8 Short Question Answer

Health The Ultimate Treasure Class 8 Short Question Answer

Question 1.

What are the two major types of diseases based on their causes and how they spread?

Answer:

The two major types of diseases are:

1. Communicable diseases, caused by pathogens and spread from person to person, and
2. Noncommunicable diseases, which are not caused by pathogens and are linked to lifestyle and environmental factors.

Question 2.

How do pathogens typically enter the human body?

Answer:

Pathogens can enter the human body through the air we breathe, contaminated food or water, direct contact with infected individuals, or through vectors like mosquitoes.

Question 3.

What is the significance of the immune response when encountering a pathogen for the first time?

Answer:

The immune response is generally low during the first encounter with a pathogen because the body has not yet developed specific antibodies.

Question 4.

Which environmental factors can contribute to an increase in dengue cases during peak months?

Answer:

Environmental factors that contribute to an increase in dengue cases include :

1. Stagnant water where mosquitoes breed.
2. Warm and humid weather conditions that favour mosquito survival and reproduction.
3. Poor waste management leading to breeding sites for mosquitoes.

Question 5.

What preventive steps can communities take to reduce the spread of dengue before the peak season?

Answer:

Preventive steps include:

1. Eliminating stagnant water sources (e.g., emptying containers that hold water).
2. Promoting community clean-up drives to reduce mosquito breeding sites.
3. Educating the public about using mosquito repellents and protective clothing.
4. Implementing fogging and spraying insecticides in areas with high mosquito populations.

Question 6.

What is the significance of vaccination in preventing diseases like smallpox?

Answer:

Vaccination is significant because it helps the immune system recognise and fight specific pathogens without causing the disease. The successful vaccination campaign against smallpox led to its eradication, demonstrating how vaccines can protect populations and prevent outbreaks.