Which one of the following concerns photophosphorylation: 

1. $\mathrm{ADP}$ $+$ $\mathrm{AMP}$ $\stackrel{\mathrm{Lightenergy}}{\to }$ $\mathrm{ATP}$

2. $\mathrm{ADP}$ $+$ $\mathrm{Inorganic}$ ${\mathrm{PO}}_4$ $\stackrel{\mathrm{Lightenergy}}{\to }$ $\mathrm{ATP}$

3. $\mathrm{ADP}$ $+$ $\mathrm{Inorganic}$ ${\mathrm{PO}}_4$ $\stackrel{}{\to }$ $\mathrm{ATP}$

4. $\mathrm{AMP}$ $+$ $\mathrm{Inorganic}$ ${\mathrm{PO}}_4$ $\stackrel{\mathrm{Lightenergy}}{\to }$ $\mathrm{ATP}$

In the sugarcane plant, ¹⁴CO₂ is fixed in malic acid because the enzyme that fixes CO₂ is:

1. Ribulose biphosphate carboxylase

2. Phosphoenol pyruvic acid carboxylase

3. Ribulose phosphate kinase

4. Fructose phosphatase

Which one of the following is wrong in relation to photorespiration:
1. It occurs in chloroplasts
2. It occurs in the daytime only
3. It is a characteristic of C₄ plants
4. It is a characteristic of C₃ plants

Which pair is wrong:
1.  $C_3$ – Maize
2.  $C_4$ – Kranz anatomy
3.  Calvin cycle - PGA
4.  Hatch and Slack cycle – O.A.A

What happens in light reaction (Photo chemical reaction):

1. Formation of ATP and NADPH₂

2. Formation of ATP

3. Formation of sugar

4. Breakdown of sugar

Which of the following absorbs light energy for photosynthesis:
1. Chlorophyll
2. Water molecule
3. O₂
4. RUBP

In photosynthesis, energy from light reaction to dark reaction is transferred in the form of:
1. ADP
2. ATP
3. RUDP
4. Chlorophyll

Which is the first CO₂ acceptor enzyme in C₄ plants:
1. RuDP Carboxylase
2. Phosphoric acid
3. RUBISCO
4. PEP-Carboxylase

For the assimilation of one CO₂ molecule in C₃ plants, the energy required in the form of ATP and NADPH₂ is:

1. 2 ATP & 2 NADPH₂

2. 5 ATP & 3 NADPH₂

3. 3 ATP & 2 NADPH₂

4. 18 ATP & 12 NADPH₂

For the synthesis of one glucose molecule, the Calvin cycle operates for: