Plant Physiology Mock Tests

Photorespiration in C3 plants occurs when RuBisCO acts as an oxygenase instead of a carboxylase. Under which condition is photorespiration most likely to occur?

Which of the following is the correct description of the relationship between G3P (glyceraldehyde-3-phosphate) in the Calvin cycle?

In C₃ plants, the first stable product of CO₂ fixation during the Calvin cycle is:

Which of the following is the primary pigment of the photosystem I (PSI)?

Which of the following is an example of a C₄ plant?

Which of the following is a distinguishing anatomical feature of C4 plant leaves?

In the electron transport chain (ETS) of the mitochondria, the final electron acceptor is:

Which of the following is the primary function of the hormone auxin in plants?