Where in a leaf is the palisade layer found, and what does that position achieve?
Near the lower surface, next to the pores that let gases in
In the middle of the leaf, where it is protected from drying
Near the upper surface, where it receives the most light✓Bonne réponse
Near the upper surface, where it keeps water from evaporating
Explication
Light is strongest as it enters the top of a leaf, so placing the cells that do most of the sugar making first in its path means little of it is absorbed elsewhere before they can use it. The loosely packed layer sits lower down, where its air spaces suit the movement of gases rather than the capture of light.