In this essay we will discuss about:- 1. Root of Cordaitales 2. Stem of Cordaitales 3. Leaf 4. Fructification 5. Seed. Essay # 1. Root of Cordaitales: The roots of cordaitales are highly branched and shallow forming stilt roots like those of mangroves. This indicates the halophytic nature of the plants which grew along the sea shores. Anatomically, the root [...]
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 [...]
In this essay we will discuss about the general structure of the plant body, explained with the help of a diagram. Growth of the plant body starts generally from the morphologically unicellular zygote which gradually develops into the embryo and then to the whole plant. In spite of great diversities existing in the vascular plants as regards their size, structure [...]