Green plants are known as autotrophs because they produce their own food. They contain green-coloured pigment in leaves called chlorophyll and so-called green plants.
Explanation of stomata:
Stomata are tiny openings or pores found on the surface of the leaf.
Stomata function in gas exchange, allowing carbon dioxide to be taken in and oxygen to be released in the presence of sunlight and water through the process called photosynthesis.