Question

A star-shaped black paper was used to cover a leaf in a destarched plant as shown below. The plant was left in sunlight for four hours and, then, the leaf was plucked, black paper was removed and tested for the presence of starch. The areas which turned blue-black when iodine solution was added were
(1) I, II, III, IV
(2) I, III, IV
(3) Only II
(4) Only IV

Answer 1

second option is absolutely correct

Answer 2

the answer is (3)only ||