Microbes In Human Welfare Question 16
Question: ‘First line of defence’ is known as
Options:
A) Antibodies
B) WBC
C) Skin
D) Liver
Show Answer
Answer:
Correct Answer: C
Solution:
Option C, the Skin, is the correct answer because it acts as a physical barrier, preventing pathogens from entering the body. It is the body’s first line of defence against infection. The skin is tough and generally impermeable to water and water-soluble substances, providing a mechanical barrier to infectious agents. Sweat secreted by sweat glands on the skin’s surface also contains antimicrobial substances.
So, the skin is indeed the first line of defence in the immune system. It’s an integral part of the body’s immune response, and it’s the first layer of defense against bacterial and viral infections. Hence, the correct answer is C) Skin.
BETA
