Question

Why do leaves are known as kitchen of the plant?

Answer 1

Chloroplasts are the special structures present on the leaves and with the help of chlorophyll, the plants can prepare their foods.

They need water, sunlight, oxygen and chloroplasts to prepare their foods, and all these ingredients area present on the leaves only.

This is the reason that leaves are known as kitchen of the plant.  

Answer 2

We know that leave are responsible for preparation of food also, leaves are the site of accumulation of all the essential items of photosynthesis as well as its storage.

So leaves are called kitchen of the $\textbf{plants.}$