The termalgaeis from the Latinalga, meaning “seaweed”. The descriptive wordalgalpertains to, characterizes, or relates toalga(e). Classification In the 5-kingdom scheme of classification, the algae, together with theprotozoa, belong to KingdomProtista. They are distinct from the protozoa by ...
Algae :The term was coined by Linnaeus (1754) for hepaticae and others but was used for its present meaning by A.L. de Jussieu (1789). The element present in thyroxin is obtained from Laminaria. In blue green algae photosynthesis process is take place in chromatophore. ...
The study of algae is called algology (from the Latin alga, meaning sea wrack) or phycology (from the Greek phykos, seaweed). See Bryophyta, Plant kingdom, Thallobionta General form and structure Algae range from unicells 1–2 micrometers in diameter to huge thalli [for example, kelps ...
Microalgae are generally considered to be photoautotrophic organisms, meaning that they are able to develop from light energy and from nutrients. The rise of molecular biology in the second half of the 20th Century, and the technological sequencing revolution that started in the 2000s, have ...
The eukaryotic algae arepolyphyletic, meaning that they did not evolve from a single common ancestor. This is clearly demonstrated in our current understanding of the tree of life — a family tree of all living organisms organized by their various evolutionary relationships. Eukaryotic algae are foun...
This group includes a wide variety of organisms that are not always closely related to one another — the similarities in form are often due to parallel evolution, where different organisms have adapted in similar ways to fill similar niches. They are described as polyphyletic, meaning that not ...
meaning that some species inherently do better than others depending on the specific disturbance. Species-rich systems also tend to have more of what we call ‘functional redundancy‘, meaning that if one species providing an essential ecosystem function (e.g., likepredation) goes extinct, there’...
In 2006, Nozaki and other University of Tokyo experts were the first to find a male-specific gene inP. starrii, which they namedOTOKOGI, a Japanese word meaning “manly.” In 2010, they found a group of female-only genes and named themHIBOTAN, or “scarlet peony,” after a 1960s ...
Positive or negative staining reaction reflects a fundamental difference in the structure of the cell wall of the bacteria. ERYTHROMYCIN IS AN ANTIBIOTIC. Erythromycin is more efficient towards G(+) bacteria than G(-). It is one of the safest antibiotics, meaning that it does not affect plants...
Temperature affects the distribution of seaweeds. The greatest diversity of algal species is in tropical waters. Farther north or south of the equator, the number of species decreases, and the species themselves are different. Many marine algae in colder latitudes are perennials, meaning that they ...