The following points highlight the two main types of seed. The types are: 1. Dicotyledonous Seeds 2. Monocotyledonous Seeds. Type # 1. Dicotyledonous Seeds: i. Gram Seed: The gram seed is more or less rounded at one end and pointed at the other. It is covered by a brown seed coat called testa; the inner whitish coat is the tegmen. [...]
The following points highlight the three main parts of a leaf. The parts are: 1. The Leaf-Base 2. The Petiole 3. The Lamina. Part # 1. The Leaf-Base: It is by no means a conspicuous part of the leaf. Some leaves like those of the pea, sensitive plant, mango have swollen leaf-bases. Such a leaf- base is called pulvinus (Fig. [...]
In this article we will discuss about:- 1. Meaning of Cross-Pollination 2. Advantages and Disadvantages of Cross-Pollination 3. Adaptations. Meaning of Cross-Pollination: If pollen grains are carried to the stigma of a flower of the same species growing on a different plant, it is cross-pollination. All unisexual flowers are cross-pollinated and even the bisexual flowers which, in fact, form the [...]