In Nature, Only About 1% to 2% of the Sun's

Multiple Choice

In nature, only about 1% to 2% of the sun's usable energy is converted into chemical energy and is stored in carbohydrate. Which of the following contribute to this apparent inefficiency of the photosynthetic process?

A) PS II and PSI are not completely synchronized because they absorb light energy at slightly different wavelengths.
B) Rubisco is able to use both carbon dioxide and oxygen as a substrate.
C) The presence of accessory pigments in chloroplasts decreases the amount of light energy available to excite chlorophyll molecules.