Maize or Indian corn (Fig. 221) is a stout annual plant cultivated for the grains during the rainy season. It forms a staple food in some parts of India. Roots are of fibrous adventitious type. Primary root aborts after germination, and is replaced by fibrous adventitious ones from the base of stem. Stems are stout, solid with distinct nodes and [...]
In this article we will discuss about the two main groups of division in Spermatophyta:- 1. Gymnosperms 2. Angiosperms. Spermatophyta: Group # 1. Gymnosperms: Gymnosperms are the naked-seeded plants. They formed dense vegetation in the past geological ages, but many of them are now extinct. Gymnosperms really constitute a group intermediate between angiosperms and pteridophytes. Flowers are very simple, devoid [...]
Here is a list of four commonly found algae:- 1. Oscillatoria 2. Nostoc 3. Spirogyra 4. Ulothrix. 1. Oscillatoria: Oscillatoria is a very common blue-green alga growing abundantly in muddy places, ditches, drains and similar damp situations forming colonies. It belongs to a very primitive group of algae, there the cells are prokaryotes, and a blue pigment, phycocyanin, is present [...]