Algae are any eukaryotes, other than plants, that conduct photosynthesis. They range from single-celled organisms to multicellular seaweeds over 180 feet in length with specialized organs. They are found in most environments, especially very wet ones, perhaps most notably the oceans, where they are the dominant producers.Know More
Algae are an extremely varied group with boundaries as much defined by what they are not as what they are. While plants have several characteristics that distinguish them from algae, the same can not be said of algae in relation to plants. Multicellular algaes, such as kelp, do have distinct structures, such as fronds, floats, and holdfasts, but they do not have well-differentiated tissues, and any part of a kelp organism will, under the right conditions, regrow the rest of its structures.
Algae are vastly important organisms, in many ways more important to life overall than the more commonly encountered plants. They sit at the base of nearly all oceanic food chains, and single-celled algaes such as diatoms are actually produce vastly more oxygen than all land plants combined. Indeed, they produce enough oxygen that, should all land plants disappear, there would still be sufficient atmospheric oxygen produced for many land animals to breathe.Learn more about Biology
Eubacteria are one of the two major groups of single cell organisms that lack nuclei and many other organelles found in eukaryotes. They have vast diversity, with a wide range of habitats and lifestyles, but all either have an elongated helical shape, a rod shape or a sphere shape.Full Answer >
Green algae may be colonial, unicellular, multicellular or filamentous. The cell walls consist of two layers of cellulose fortified by pectin. Green algae also has green chloroplast that carries out photosynthesis.Full Answer >
The main characteristics of the phylum Basidiomycota include the formation of basidia on a fruiting body and the development of basidiospores, according to the Tree of Life Web Project. The basidiospores germinate to form septate hyphae or yeast cells.Full Answer >
Annelids share the common characteristics of size and symmetry and have body walls and coeloms. Although they vary widely in habitat area and live in different environments around the world, annelids have structured nervous systems, sense organs, circulation and respiratory structures and segmented organs.Full Answer >