The primary ${\mathrm{CO}}_2$ acceptor in ${\mathrm{C}}_4$ plants is:

1.	RuBP in mesophyll cells
2.	RuBP in bundle sheath cells
3.	PEP in mesophyll cells
4.	PEP in bundle sheath cells

 

The ${\mathrm{C}}_3$ pathway:

In ${\mathrm{C}}_4$ pathway, the 4-carbon compound transported to bundle sheath cells most commonly is:

The 2-carbon compound formed in photorespiration is:

Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. This is because:

The correct sequence of flow of electrons in the light reaction is

The factors that can be limiting for the light independent reactions of photosynthesis are:

The wavelengths of light most useful in photosynthesis are:

Oxygen, during oxygenic photosynthesis, is produced during:
1. cyclic photophosphorylation
2. the light-dependent reactions involving photosystems I and II
3. Calvin cycle
4. the Krebs cycle