Question

Most leaves have the upper surface more green and shiny than the lower ones why?

Answer 1

Most leaves have the upper surface greener and shinier than the lower ones because the upper surface of the leaves have more chloroplasts which help in photosynthesis. Also the thick cuticle layer on the upper surface of the leaf makes it shiny.

Answer 2

The presence of high amount of a green color pigment called as chlorophyll, leaves are more green and shiny in upper surface than in lower surface

Explanation:

In plant leaf is the site of photosynthesis. It has two sides- the upper side and the lower side. As the upper side is always in exposure to sunlight it is involved in photosynthesis process.

The upper surface of the leaves is shinier because when compared to lower side, the green color pigment called chlorophyll is present more in the upper region.