Question

It has been seen that plants aquire more leaves during summers. why is it so ?

Answer 1

 in the fall and winter a tree sheds its leafs so it can feed its self it doesnt need to feed the leaves 

but 

during the summer it grows its leafs back so it can start photosynthesis again 

photosynthesis is the process of using chlorophyl [the stuff that makes leafs green] to capture sunlight and produce its own food 

most plants are autotrophs meaning they MAKE their own food some plants though are both so dont confuse everything for the same 

the tree or plant its self cant go through photosynthesis without leafs therefore it needs to have leafs