Q. To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?
A) Physical barriers
B) Cytokine barriers
C) Cellular barriers
D) Physiological barriers
Explanation
[Solution from source] NCERT classes acid in the stomach, saliva in the mouth and tears from the eyes as physiological barriers that stop microbial growth. Physical barriers are the skin and the mucus lining of the tracts. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.