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STATEMENT BASED
Directions: In the questions, two statements are given as
Statement-I and Statement-II.
Mark the correct choice as:
(1) Both Statement-I and Statement-II are correct
(2) Both Statement-I and Statement-II are incorrect
(3) Statement-I is correct and Statement-II is incorrect
(4) Statement-I is incorrect and Statement-II is correct
Statement-I: When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs due to cyclic flow of electrons.

Statement-II: Cornelius van Niel inferred that the \( \mathrm{O}_{2} \) evolved by the green plant comes from \( \mathrm{CO}_{2} \), not from \( \mathrm{H}_{2} \mathrm{O} \).
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