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 $ .