Photosynthesis In Higher Plants Question 234

Question: $ O_2 $ evolution is directly associated with [DPMT 2003; BVP 2004]

Options:

A) PS I

B) PS II

C) Phytochrome

D) Phycocyanin

Show Answer

Answer:

Correct Answer: B

Solution:

The photosystem-II (Reaction centre of P-680) extracts an $ {e^{-}} $ from water returning to its unexcited state.

The removal of four e- from two molecules of water requires 4 quanta of light to fall on PS-II and leads to the production of $ 4{H^{+}} $ ions and one molecules of $ O_2 $ .