Biology
Grade-9
Easy

Question

In PSII, the energy of a photon is first used to __________.

  1. Produce ATP    
  2. Produce oxygen    
  3. Energise electron    
  4. Produce carbon dioxide    

hintHint:

The photon energizes the electrons

The correct answer is: Energise electron


    • In PS2 energy of photon  causes the electrons in the chlorophyll to become excited
    • The energy given to the electron allows it to break free from an atom of chlorophyll molecule 
    • The electrons are ultimately replaced by splitting of water molecules that produces oxygen 

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