The green part of the plant is primarily involved in which of the following processes?

Select the correct option:
$(1)$ Julius von Sachs / $T$. $W$. Engelmann proved with evidence that glucose is produced when plants grow.
$(2)$ In $PS-II$,maximum light absorption occurs at a wavelength of $680 \, nm / 800 \, nm$.

Identify the location and function of the following structures in a chloroplast:
$(1)$ Thylakoid
$(2)$ Stroma

Choose the incorrect statement with respect to photosynthesis.

Who proposed the theory of photosynthesis in guard cells?

The energy stored in glucose basically comes from