1. Lacking elasticity; unyielding or unadaptable. See Synonyms at stiff. 2. Economics Of, relating to, or being a good for which changes in price have little effect on the quantity demanded or supplied: the inelastic demand for cigarettes.
The classification of algae is complex and somewhat controversial, especially concerning. the blue-green algae (Cyanobacteria), which are sometimes known as blue-green. bacteria or Cyanophyta and sometimes included in the Chlorophyta. These topics are. not covered in detail this document.
Algae are simple Eukaryotic photosynthetic autotrophs. They can be unicellular as well as multi-cellular. They belong to the kingdom Protista. Due to the presence of chlorophyll, Algae are capable of making their own food and the process is referred to as photosynthesis. Most of them are microscopic. However, few are quite large and can exceed in meters lengthwise.