Question

The leaves in shrubs and palms are arranged in such a way that they do not overlap each other.what could be the reason

Answer 1

Hey user , here's your answer...

This is an adaptation to HIGH LIGHT CONDITIONS.
There is enough light and not all of it is blocked by the uppermost leaf layers and some filters through to lower leaves .

Hope it will help you :)

Answer 2

The possible reason for this is that to maximize the surface area and increase the amount of sunlight absorbed.  

Explanation:

The function of arrangement of leaves such that they do not overlap each other so that no leaf stands in the stand and sunlight falls in every leaf to maximize the surface area for absorption of sunlight which is used in photosynthesis to make their food.

Usually this is an adaption of the plant to its environment. It happens in plants which are in an area that receives less or no sunlight.