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 $NAD{P}^{+}$ 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
• B. III and IV
• C. I and III
• D. I and IV
• E. II and III

Answer 1

The correct option is A I and II

Statement I and II are correct, while III and IV are incorrect.
Reduction of $NAD{P}^{+}$ 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.