Question

169. How many of the following statement(s) is/are
correct?
(i) Retinal is a light absorbing part of all the visual
photopigments.
(ii) The photopigments are embedded in the
membrane discs of the outer segment.
(iii) Photoreceptors in the human eye are
depolarised during darkness.
(iv) Receptors produce graded potential.
(1) One
(2) Two
(3) Three
(4) Four
(14​

Answer 1

Answer:

1 3 4 are correct I think not sure