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Question

Consider the following statements regarding photosynthesis
I. ATP formation during photosynthesis is formed as photophosphorylation
II. Kranz anatomy pertains to leaf.
III. Reduction of NADP+ to NADPH occurs during Calvin cycle.
IV. In a chlorophyll molecule, magnesium is present in phytol tail.
Choose the correct pair of statements.

A
I and II
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B
III and IV
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C
I and III
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D
I and IV
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E
II and III
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Solution

The correct option is A I and II
Statement I and II are correct, while III and IV are incorrect.
Reduction of NADP+ to NADPH occurs during non-cyclic photophosphorylation of light reaction, while oxidation of NADPH takes place during Calvin cycle.
The chlorophyll molecule has a porphyrin head and a phytol tail. The porphyrin head is a flat, square, structure of alternating single and double bonds containing four smaller pyrrole rings with a magnesium atom at the centre. The phytol tail is a 20 carbon alcohol.

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