Algae is a kind of a photosynthetic organism, which is usually grown in the moist areas. These are usually the simple plants that grow near to the water bodies. It contains a kind of chlorophyll pigments that act as a primary coloring agent. Generally, it comes in the form of aquatic and autotrophic with different cell types and tissues.


Types of Algae

There are a number of types of which some of them are listed below-

Blue-green Algae

It is also called as Cyanobacteria, is grown in dams, rivers, reservoirs, creeks, lakes and etc. These classes of bacteria usually act as like the plant which obtains energy through the process of photosynthesis. Blue-green algae have a great feature, it fixes the nitrogen in the soil. Hence it is also called as nitrogen-fixing bacteria. The problem with this type of algae is that it has an unpleasant odor and also the taste. It also causes skin problems in human beings. This type of bacteria is found in lichens, Anthoceros and etc.

Red Algae

It is also called as Rhodophyta is a distinctive type of species that are mostly found in the freshwater lakes. These are usually the oldest type of the eukaryotic algae. The color is due to its pigment called as phycocyanin and phycoerythrin. The other pigments within it include the chlorophyll a. They lack the chlorophyll b or the beta-carotene.

Green Algae

It is a large group of bacteria that help other organisms to undergo photosynthesis. The green algae usually include unicellular and the colonial flagellates. The example of green algae is Paramecium, hydra and etc.

Characteristics of Algae

  • Algae can be either unicellular or multicellular organism..
  • Algae’s are generally found in the tissues of other plants or on the rocks in the moist places.
  • Reproduction in algae occurs in both asexual and sexual forms. Asexual reproduction occurs by spore formation.
  • Most of them are generally found in water and are aquatic in nature, especially in plankton. These are of a free floating type.
  • These don’t have anything like roots, stems or leaves, but still, are involved in the process of photosynthesis.

Examples of Algae

The examples of Algae include Nostoc, Fucus, lichens, Paramecium, Spirogyra and many more. One more new introduction about Algae is the algae fuel. It is an alternative to the fossil fuels and a rich source of energy. It is a kind of bio-fuel such as the corn and sugar-cane.

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Practise This Question

Based on observations in monohybrid cross, Mendel postulated which of the following laws?