Question

Consider the following statements about phagocytes in man.
1) They provide the second line of defense.
2) They can recognize and distinguish between self and non-self.
3) They have antigen receptor.
Which of the above statements are true?

• A. Only 1 and 2
• B. Only 1 and 3
• C. Only 2 and 3
• D. All are true

Answer 1

Answer: (B)

Only 1 and 3

Phagocytes are the type of cells present inside the body capable of engulfing bacteria and other small cells in the body and provide second line defense. It means that they destroy invaders in a generalized way and activate via antigen receptors that bind to an antibody attached to antigen without recognizing between self and non-self.

So the correct option is "Only 1 and 3".