Question

What is the flat portion of the leaf called?

Answer 1

Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. The leaves of some kinds of plants also have a third part, called the stipules. The Blade, or lamina, is the broad, flat part of the leaf. Photosynthesis occurs in the blade, which has many green food-making cells.

Answer 2

Answer:

The ‘flat portion’ of the leaf is called the leaf blade or lamina or epipodium.

Explanation:

The leaf blade is the expanded portion of a leaf. It is the most important part of a leaf as it bears the stomata which helps in the passage of air. The blade is usually green in colour for the presence of chlorophyll. It is expanded so that it may trap sunlight.  

Thus in the leaf blade the vital process of photosynthesis occurs. The ‘leaf blade’ is supported by the veins and veinlets which also help in transportation of nutrients.