Q. Which chemical compound/molecule supplies electrons continuously to PS-II?
A) $CO_{2}$
B) $O_{2}$
C) $H_{2}O$
D) NADPH
Explanation
$H_{2}O$. Electron excited by PS-I used in the formation of $NADPH + H^{+}$. These electrons come ultimately from $H_{2}O\$through photosynthesis
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.