S : Each eye of Cockroach consist of 2000 ommatidia.
R : Vision of Cockroach is known as mosaic vision.
(A) S - correct, R - Incorrect, R is explaination of S.
(B) Both S and R correct but R is not a explaination of S.
(C) S - correct, R - incorrect
(D) S-incorrect, R - correct
