Match List-I with List-II : Choose the correct answer from the options given below :
- (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
- (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
- (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
Answer
(1) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
Solution
As per NCERT, innate immunity consists of four types of barriers:
(a) Cellular barriers — leukocytes such as polymorpho-nuclear leukocytes (PMNL-neutrophils), monocytes, natural killer cells and macrophages — (iii).
(b) Cytokine barriers — virus-infected cells secrete interferons which protect non-infected cells — (i).
(c) Physical barriers — skin and the mucus coating of the epithelium lining the respiratory, gastro-intestinal and urogenital tracts — (ii).
(d) Physiological barriers — acid in the stomach, saliva in the mouth, tears from eyes — (iv).
∴ (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
Answer: (1)