Which of the following statements is/are correct about photosynthesis?
(A) Liberation of oxygen when green cells are exposed to sunlight in the presence of a suitable acceptor is known as the Emerson effect.
(B) Green light is not effective for photosynthesis.
(C) When CO₂ is added to PEP, the first stable product is oxaloacetate.
(D) PEP is the primary CO₂ acceptor in C₄ plants.
Choose the correct answer from the options given below:

Correct option is D

· Green light is the least effective for photosynthesis because it is mostly reflected by chlorophyll, while red and blue light are more efficiently absorbed.
· C₄ plants use Phosphoenolpyruvate (PEP) as the primary CO₂ acceptor, producing oxaloacetate as the first stable compound in the C₄ pathway.
· Emerson effect is related to photosynthetic enhancement under far-red light, but it does not specifically describe oxygen liberation.