The upper side of an organism is its

Dorsal.

Explanation:

For all organisms, the upper side would be referred to as the dorsal, while the middle and lower side would be the abdomen. Hope this helped you! :)

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602