Microbes In Human Welfare Question 28
Question: ‘Second line of defence’ is known as
Options:
A) Antibodies
B) WBC
C) Liver
D) Blood
Show Answer
Answer:
Correct Answer: B
Solution:
The ‘Second line of defence’ in the human body refers to the internal defenses that combat pathogens once they have entered the body. These defenses include fever, inflammation, phagocytosis, natural killer cells, and the complement system.
Option B, WBC (White Blood Cells), is the correct answer. White blood cells, also known as leukocytes, play a crucial role in the immune system as they help the body fight infections. They are part of the body’s second line of defense, which kicks in when pathogens manage to bypass the first line of defense (the skin and mucous membranes).
BETA
