The energy stored in glucose basically comes from

Which would do maximum harm to a tree?

According to one estimate,how many $kg$ of carbon is fixed in the biosphere through photosynthesis annually?

For the reduction of one molecule of $CO_2$ with water,the energy required is (in $kcal$)

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 $680 \, nm / 800 \, nm$.

In which of the following aspects do photosynthetic bacteria differ from green plants?