In this article we will discuss about the structure of a leaf with the help of a diagram. A leaf is a compromise between two conflicting evolutionary pressures. The first is to expose a maximum photosynthetic surface to sunlight; the second is to conserve water while, at the same time, providing for the exchange of gases necessary for photosynthesis. The [...]
Here is an essay on the ‘Lamina of a Leaf’ for class 9, 10, 11 and 12. Find paragraphs, long and short essays on the ‘Lamina of a Leaf’ especially written for school and college students. Essay # 1. Shape of Lamina: The lamina shows much variation with regard to their shapes. These are divided into three main groups: a. [...]
A typical leaf consists of the following three parts (Fig. 2.55): 1. Hypopodium or Leaf-Base 2. Petiole or Mesopodium or Leaf Stalk 3. Leaf-Blade or Epipodium or Lamina. Essay # 1. Hypopodium or Leaf-Base: It is the lowermost part of a leaf by which it remains attached to the stem or branch. In many cases, it is very difficult [...]