Green algae are a whole group of living things that comprise more than 10,000 species spread throughout the world. These are organisms of fresh and salt water that are of great importance, as they are closely related to terrestrial plants.
Surely you have seen them many times when bathing in rivers and beaches or in nature documentaries, but if you want to learn more about these aquatic living beings, then join us in this Green Ecologist article in which we talk in detail about what are green algae, their characteristics, types and examples
If we refer to the taxonomy of green algaeThese are part of the Plantae kingdom and the Viridiplantae sub-kingdom. Among them two clades or divisions are distinguished, among which are the Chlorophyta and the Charophyta.
In which to the classification of green algae Regarding, they can be differentiated by their reproduction, their biological cycles or their types. We will see all these ways of classifying them in detail a little further down. In addition, to learn more about these organisms, we advise you to read this other article about the Classification of algae.
In summary, these are the main characteristics of green algae:
These are the types of green algae existing:
They are the most numerous, with around 8,000 species. They store starch in their plastids and include both multicellular and unicellular species. They inhabit both fresh and marine waters and, even, terrestrial areas of high humidity and have a haplodiploon life cycle. They are classified into two main types: the Prasinophytina and the Chlorophytina.
These are microscopic, flagellated and unicellular green algae. They are from marine environments and are currently considered primitive, very simple organisms.
These are multicellular green algae that are characterized by developing phycoplasts, their own microtubules.
As examples, some Chlorophytic green algae names they are the Mamiellophyceae (Prasinophytina), the Chlorophyceae (Chlorophytina) and the Pedinophyceae (Chlorophytina).
These algae are the closest ancestors to land plants. They have calcified cell walls, with cellulose, chlorophyll a and b, starch, xanthophyll and carotene. They are of both fresh and brackish waters.
These are filamentous green algae of the discoidal type, which grow from the edges of the disk itself. They are aquatic and reproduce both asexually by zoospores and sexual by oogamy.
These are formed by a single species of algae, Chlorokybus atmophyticus, a unicellular green algae of terrestrial habitat that can be found in alpine areas.
Also commonly called caral algae, these are free-living organisms that can be found in fresh waters. They can reach sizes of up to 60 cm, being the only ones in the Charophyta that reach this size.
These carophytes comprise only 3 genera of multicellular algae with unbranched filaments. They are the Entransia, the Hormidiella and the Klebsormidium.
Here we find a single genus of unicellular algae, the Mesostigma, with a single species as well, the freshwater M. viride Lauterborn.
In the latter type we find both unicellular and multicellular freshwater algae. They reproduce by conjugation or isogamy, and are closely related to land plants.
To speak briefly about the great importance of green algae, we highlight these aspects:
If you want to learn more about green algae and other types, as well as their relationship with plants, we recommend this other article by Green Ecologist about Similarities and differences between plants and algae.
If you want to read more articles similar to Green algae: what are they, characteristics, types and examples, we recommend that you enter our Biodiversity category.