306 results found

Search Results for: class

Class

Our earth is home to diverse groups of organisms. These living things exist in the ecosystem. Dating back to the ancient... Read More

Definition

Subclass

Definition noun, plural: subclasses (taxonomy) A taxonomic rank that is subordinate to a class (and superior to an... Read More

Definition

Superclass

Definition noun, plural: superclasses (taxonomy) A taxon rank subordinate to a phylum (or a subphylum) and superior to a... Read More

Definition

Classification system

Classification Systems Definition In life, many things are classified, that is, to put into categories or groups based on... Read More

Definition

Aves

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More

Definition

Proteoglycan

What are proteoglycans? Proteoglycans are primarily a type of polysaccharide. Structurally, proteoglycans are... Read More

Definition

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Definition

Taxonomy

Taxonomy Definition The term "taxonomy" was developed from two Greek words, "taxis," meaning arrangement, and "nomia,"... Read More

Definition

Diatom

Diatom Definition A diatom is a unicellular eukaryotic alga characterized by having a siliceous covering and a symmetrical... Read More

Definition

Survival of the fittest

When we talk about evolutionary processes, the usage of the phrase "Survival of the fittest" has been very common in... Read More

Definition

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Definition

SsRNA-RT virus

Definition noun, plural: ssRNA-RT viruses Single-stranded RNA virus with a positive sense, single stranded RNA genome but... Read More

Definition

Virus

Definition noun, plural: viruses A submicroscopic infectious agent that is unable to grow or reproduce outside a host... Read More

Definition

Seaweed

A seaweed refers to any of the macroscopic marine algae. They include the conspicuous, multicellular algal species of... Read More

Definition

Taxon

Taxon Definition When studying biological organisms, it’s easier to define, classify and understand them when we follow a... Read More

Definition

Antigen

Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More

Definition

Trematoda

Definition noun (taxonomy) A class of the Phylum Platyhelminthes that is comprised of parasitic flukes Supplement The phylum... Read More

Definition

Phylum

Just like it is easy to identify and sort anything in the supermarkets when placed in the right section with proper display... Read More

Definition

Deltaproteobacteria

Definition noun A taxonomic class in Phylum Proteobacteria that includes diverse species such as myxospore-forming... Read More

Definition

Xanthophyceae

Definition noun A taxonomic class comprised of the xanthophytes (yellow-green algae) Supplement Xanthophyceae is a taxonomic... Read More

Definition

Gammaproteobacteria

Definition noun (taxonomy) A class within Phylum Proteobacteria that includes unicellular bacteria that are mostly... Read More

Definition

Golden algae

In phycology, the golden algae are algal species that are found mostly in freshwater. They are also called the chrysophytes.... Read More

Definition

Sort

sort 1. A kind or species; any number or collection of individual persons or things characterised by the same or like... Read More

Definition

Fluke

Definition noun, plural: flukes (1) (ichthyology) Summer flounder, Paralichthys dentatus (a flatfish) (2) (cetology) Either... Read More

Definition

Transposon

Definition noun, plural: transposons A small segment of DNA that is capable of replicating and inserting copies of DNA at... Read More

Definition

Kind

Kind 1. Nature; natural instinct or disposition. He knew by kind and by no other lore. (Chaucer) Some of you, on pure... Read More

Definition

Alphaproteobacteria

Definition noun A taxonomic class belonging to the phylum Proteobacteria that includes phototropic proteobacteria,... Read More

Definition

Placentalia

Definition noun (taxonomy) A subdivision of the class Mammalia characterized primarily by their fetus being carried in the... Read More

Definition

Protist

Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with a nucleus. However, they are... Read More

Definition

Monotreme

Definition noun (zoology) Any of the egg-laying mammals belonging to the taxonomic group, Monotremata Supplement The class... Read More

Definition

Retrotransposon

Definition noun, plural: retrotransposons A transposon that is amplified via reverse transcription, i.e. the DNA element is... Read More

Definition

Ligase

An enzyme is a catalyst or a chemical produced by cells to speed up a biochemical reaction. It is usually a protein molecule... Read More

Definition

Monotremata

Definition noun (taxonomy) A subdivision of the class Mammalia comprised of mammals laying eggs rather than giving birth to... Read More

Definition

Anthozoan

Anthozoan (Science: zoology) Pertaining to the anthozoa. One of the anthozoa. Definition noun, plural: anthozoans Any of the... Read More

"Cronopio dentiacutus", a prehistoric mammal (an illustration)

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Mammalian Ancestors

Humans are mammals, the most successful taxonomic class of organisms to colonize the Earth. The word mammal derives from the... Read More

Definition

Mammalia

Definition noun, plural: mammals A taxonomic class that includes all mammals Supplement Mammalia is a taxonomic class of... Read More

Definition

Cestoda

Definition noun (taxonomy) A class of the phylum Platyhelminthes that is comprised of tapeworms Supplement The phylum... Read More

Definition

Marsupial

Definition noun (zoology) A mammal primarily characterized by having a pouch used for carrying their immature young, and... Read More

Definition

Chlorophyta

Chlorophyta Definition Chlorophyta is a taxonomic group (a phylum) comprised of green algae that live in marine habitats.... Read More

Definition

Paraphyletic

Definition adjective A biological taxonomy that pertains to a certain group of organisms does include some but not all of... Read More