Algae refer to a diverse group of photosynthetic organisms that live in aquatic environments. They can be single-celled or multicellular and exist in many shapes, sizes and colors. Scientifically, algae lack true stems, roots and leaves like plants. Some common types of algae include seaweeds, pond scum, and spirulina.
Algae are classified into four main groups - green algae, red algae, brown algae and diatoms. They can be found virtually everywhere on ... Read more
