Question

Which of the following statements are correct?
(a) Photosynthetic ATP synthesis is called photophosphorylation.
(b) Kranz anatomy occurs in leaf.
(c) Reduction in NADP to NADPH occurs during Calvin cycle.
(d) Magnesium occurs in phytol tail of chlorophyll.

• A. a and b
• B. c and d
• C. a and c
• D. a and d

Answer 1

Answer: (A)

a and b

A) In photosynthesis, the phosphorylation of ADP to form ATP using the energy of sunlight is called photophosphorylation. Sp 'a' is correct. Kranz anatomy is the special structure of leaves in $C_4$ plants like maize where the tissue equivalent to the spongy mesophyll cells is clustered in a ring around the leaf veins, outside the bundle-sheath cells. So, 'b' is correct.

B) NADPH is required in Calvin's cycle. It is not reduced from NADP to NADPH in Calvin's cycle. So, 'c' is wrong. Magnesium occurs in the porphyrin head of chlorophyll. So, 'd' is wrong.

C) 'a' is correct while 'c' is wrong.

D) 'a' is correct while 'd' is wrong.

So the correct answer is 'a and b'.