Which light range is most effective in photosynthesis?

The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of:
1. 1 molecule of the 3-C compound
2.  1 molecule of the 6-C compound
3. 1 molecule of a 4-C compound and 1 molecule of the 2-C compound
4. 2 molecules of the 3-C compound

Photosynthesis in ${\mathrm{C}}_4$ plants is relatively less limited by atmospheric ${\mathrm{CO}}_2$ levels because
1. The primary fixation of ${\mathrm{CO}}_2$ is mediated via PEP carboxylase.
2. Effective pumping of ${\mathrm{CO}}_2$ into bundle sheath cells.
3. Four carbon acids are the primary initial ${\mathrm{CO}}_2$ fixation products.
4. RuBisCO in ${\mathrm{C}}_4$ plants has higher affinity for ${\mathrm{CO}}_{2.}$

Which of the following statements is incorrect?
1. RuBisCO is a bifunctional enzyme
2. In C₄ plants, the site of RuBisCO activity is mesophyll cell
3. The substrate molecule for RuBisCO activity is a 5-carbon compound
4. RuBisCO action requires ATP and NADPH 

The first stable product of CO₂ fixation in sorghum is:

Phosphoenol pyruvate (PEP) is the primary CO₂ acceptor in:

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?

In the leaves of C₄ plants, malic acid formation during CO₂ fixation occurs in the cells of :

Study the pathway given below-

In which of the following options, correct words for all the three blanks A, B and C are indicated?

In sugarcane plant,${}^{14}\mathrm{CO}_2$ is fixed in malic acid in which the enzyme that fixes ${\mathrm{CO}}_2$ is
1. Ribulose biphosphate carboxylase
2. Phosphoenol pyruvic acid carboxylase
3. Ribulose phosphate kinase
4. Fructose phosphatase