Question

How many additional ATP are used during synthesis of two molecules of hexose sugar in maize than tomato?

• A. $12$
• B. $36$
• C. $24$
• D. $8$

Answer 1

The correct option is A $12$

Hexose synthesis in plants takes place by C3 and C4 pathway. C3 pathway takes place in dicots and requires 18 ATP. C4 pathway takes place in monocots and requires 30 ATP.

Tomato is a dicot and maize is a monocot, so tomato uses 12 ATPs less than the maize.

So the correct answer is option A "12".