Question

A green plant absorbs a toxic substance that completely blocks the production of ATP. How would this most likely affect the dark reactions? A - The dark reactions would stop happening. B - The dark reactions would produce more NADPH C - The dark reactions would continue to produce oxygen D - The dark reactions would produce more carbon dioxide

Answer 1

The correct answer is  A - The dark reactions would stop happening. Because  the possible guessing for the blocking of production of ATP will be the stopping of dark reaction.

Answer 2

The most appropriate answer would be A - The dark reactions would stop happening.

Light-independent or dark reaction or Calvin cycle is a part of photosynthesis in which products of light-dependent reaction (ATP and NADPH) are used to fix carbon from carbon dioxide into glucose.

It takes around 9 molecules of ATP and 6 molecules of NADPH in order to produce 1 molecule of glucose.

So, if ATP production would be stopped in a plant then dark reaction would also stop happening.