The path of $CO_2$ in the dark reaction of photosynthesis was successfully traced by the use of which of the following?

Which sugar is synthesized during the dark reaction of photosynthesis?

The thylakoids are removed and kept in a culture medium containing $CO_2$ and $H_2O$. If the setup is exposed to light,hexose sugars are not formed as the end product. The most appropriate reason for this is that

Stroma in the chloroplasts of higher plants contains

How many turns of the Calvin cycle are required to form one hexose molecule?

What does the stroma of the chloroplast in higher plants contain?