1. As a compound to a C₃ plant, how many additional molecules of ATP are needed for the net production of one molecule of hexose sugar by C₄ plants?
 a) 2
 b) 6
 c) 0
 d) 12

2. Proton gradient is broken down due to
 a) Movement of electrons across the membrane to stroma
 b) Movement of electrons across the membrane to the lumen
 c) Movement of a proton across the membrane to the lumen
 d) Movement of proton across the membrane to stroma

 

4. The membrane of the thylakoid is called
 a) Cell membrane
 b) Fret membrane
 c) Granum membrane
 d) Thylakoid membrane

5. The enzyme responsible for primary carboxylation in C₃ plants is
 a) Hexokinase
 b) Succinic dehydrogenase
 c) Pyruvate carboxylase
 d) RuBP carboxylase oxygenase

6. The law of limiting factors was proposed with particular reference to photosynthesis. Identify the scientist, who proposed this law?
 a) Calvin
 b) Weismann
 c) Emerson
 d) Blackman

7. The synthesis of one molecule of glucose during the Calvin cycle requires
 a) 12 molecules of ATP and 18 molecules of NADPH₂
 b) 6 molecules of ATP and 12 molecules of NADPH₂
 c) 18 molecules of ATP and 12 molecules of NADPH₂
 d) 12 molecules each of ATP and NADPH₂

8. The enzymatic reactions incorporate CO₂ into the plants leading to the synthesis of sugar in
 a) Stroma
 b) Stroma lamella
 c) Grana
 d) Both (a) and (b)

9. In CAM plants, carbon dioxide acceptor is
 a) RuBP
 b) PEP
 c) OAA
 d) PGA

10. PEP carboxylase
I. is involved in at least some CO₂ fixation in both C₃ and C₄ plants
II. Catalyses the reaction of fixing CO₂ into pyruvic acid in bundle sheath cells
III. is capable of fixing CO₂ more efficiently at lower atmospheric CO₂ concentrations than RuBP carboxylase
Select the correct option
 a) I and II
 b) II and III
 c) I, II and III
 d) Only III

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