94 relations: Acanthocephala, Animal, Antenna (biology), Antonie van Leeuwenhoek, Anus, Bdelloidea, Brachionus, Brine shrimp, Bryozoa, Cell (biology), Cephalodella, Christian Gottfried Ehrenberg, Cilium, Clade, Cladocera, Cladogram, Cloaca, Copepod, Cosmopolitan distribution, Crustacean, Cryptobiosis, Ctenophora, Cuticle, Desiccation, Digestive enzyme, Dioecy, DNA barcoding, Earwig, Egeria densa, Endemism, Esophagus, Eurotatoria, Eutely, Evolution, Fertility, Floscularia ringens, Forceps, Fresh water, Gastrointestinal tract, Gene, Georges Cuvier, Gnaphalium, Gregor Mendel, Herring, Homology (biology), Jellyfish, John Harris (writer), Lake Baikal, Lake Pontchartrain, Larva, ..., Latin, Louisiana, Maggot, Micrometre, Monogononta, Multicellular organism, Nephridium, Osmoregulation, Ovary, Oviduct, Ovoviviparity, Parasitism, Parthenogenesis, Penis, Pharynx, Photoreceptor cell, Phylum, Plankton, PLOS One, Proceedings of the National Academy of Sciences of the United States of America, Prostate, Rotaria, Rotifer, Salivary gland, Salmon, Seawater, Seisonidae, Sessility (motility), Sexual dimorphism, Sexual reproduction, Species, Species complex, Starfish, Stomach, Sugar, Symmetry in biology, Syncytium, Tardigrade, Testicle, Trehalose, Vas deferens, Wheel, Yolk, Zygosity. Expand index (44 more) » « Shrink index
Acanthocephala (Greek ἄκανθος, akanthos, thorn + κεφαλή, kephale, head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host.
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
Antennae (singular: antenna), sometimes referred to as "feelers," are paired appendages used for sensing in arthropods.
Antonie Philips van Leeuwenhoek FRS (24 October 1632 – 26 August 1723) was a Dutch businessman and scientist in the Golden Age of Dutch science and technology.
The anus (from Latin anus meaning "ring", "circle") is an opening at the opposite end of an animal's digestive tract from the mouth.
Bdelloidea (Greek βδελλα, bdella, "leech-like") is a class of rotifers found in freshwater habitats all over the world.
Brachionus is a genus of planktonic rotifers occurring in freshwater, alkaline and brackish water.
Artemia is a genus of aquatic crustaceans also known as brine shrimp.
Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of aquatic invertebrate animals.
The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms.
Cephalodella is a genus of rotifers in the family Notommatidae.
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876), German naturalist, zoologist, comparative anatomist, geologist, and microscopist, was one of the most famous and productive scientists of his time.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
A cilium (the plural is cilia) is an organelle found in eukaryotic cells.
A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
The Cladocera are an order of small crustaceans commonly called water fleas.
A cladogram (from Greek clados "branch" and gramma "character") is a diagram used in cladistics to show relations among organisms.
In animal anatomy, a cloaca (plural cloacae or) is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals, opening at the vent.
Copepods (meaning "oar-feet") are a group of small crustaceans found in the sea and nearly every freshwater habitat.
In biogeography, a taxon is said to have a cosmopolitan distribution if its range extends across all or most of the world in appropriate habitats.
Crustaceans (Crustacea) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles.
Cryptobiosis is an ametabolic state of life entered by an organism in response to adverse environmental conditions such as desiccation, freezing, and oxygen deficiency.
Ctenophora (singular ctenophore, or; from the Greek κτείς kteis 'comb' and φέρω pherō 'to carry'; commonly known as comb jellies) is a phylum of invertebrate animals that live in marine waters worldwide.
A cuticle, or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection.
Desiccation is the state of extreme dryness, or the process of extreme drying.
Digestive enzymes are a group of enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body.
Dioecy (Greek: διοικία "two households"; adjective form: dioecious) is a characteristic of a species, meaning that it has distinct male and female individual organisms.
DNA barcoding is a taxonomic method that uses a short genetic marker in an organism's DNA to identify it as belonging to a particular species.
Earwigs make up the insect order Dermaptera.
Egeria densa, the large-flowered waterweed or Brazilian waterweed, is a species of Egeria native to warm temperate South America in southeastern Brazil, Argentina, and Uruguay.
Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere.
The esophagus (American English) or oesophagus (British English), commonly known as the food pipe or gullet (gut), is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.
Eurotatoria is a class of rotifers.
Eutelic organisms have a fixed number of somatic cells when they reach maturity, the exact number being constant for any one species.
Evolution is change in the heritable characteristics of biological populations over successive generations.
Fertility is the natural capability to produce offspring.
Floscularia ringens is a species of rotifer belonging to the subclass Monogononta, which resides in a tube that it builds using many little circular pellets consisting of bacteria and small pieces of detritus.
Forceps (plural forcepshttps://www.ahdictionary.com/word/search.html?q.
Fresh water (or freshwater) is any naturally occurring water except seawater and brackish water.
The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.
In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.
Jean Léopold Nicolas Frédéric, Baron Cuvier (23 August 1769 – 13 May 1832), known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology".
Gnaphalium is a genus of flowering plants in the sunflower family, commonly called cudweeds.
Gregor Johann Mendel (Řehoř Jan Mendel; 20 July 1822 – 6 January 1884) was a scientist, Augustinian friar and abbot of St. Thomas' Abbey in Brno, Margraviate of Moravia.
Herring are forage fish, mostly belonging to the family Clupeidae.
In biology, homology is the existence of shared ancestry between a pair of structures, or genes, in different taxa.
Jellyfish or sea jelly is the informal common name given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria.
John Harris (c. 1666 – 7 September 1719) was an English writer, scientist, and Anglican priest.
Lake Baikal (p; Байгал нуур, Baigal nuur; Байгал нуур, Baigal nuur, etymologically meaning, in Mongolian, "the Nature Lake") is a rift lake in Russia, located in southern Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast.
Lake Pontchartrain (Lac Pontchartrain) is a brackish estuary located in southeastern Louisiana in the United States.
A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
Louisiana is a state in the southeastern region of the United States.
A maggot is the larva of a fly (order Diptera); it is applied in particular to the larvae of Brachycera flies, such as houseflies, cheese flies, and blowflies, rather than larvae of the Nematocera, such as mosquitoes and Crane flies.
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".
Monogononta is a class of rotifers, found mostly in freshwater but also in soil and marine environments.
Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.
The nephridium (plural nephridia) is an invertebrate organ which occurs in pairs and performs a function similar to the vertebrate kidney.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution) to keep the fluids from becoming too diluted or concentrated.
The ovary is an organ found in the female reproductive system that produces an ovum.
In vertebrates, other than mammals, the passageway from the ovaries to the outside of the body is known as the oviduct.
Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother's body until they are ready to hatch.
In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
Parthenogenesis (from the Greek label + label) is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization.
A penis (plural penises or penes) is the primary sexual organ that male animals use to inseminate sexually receptive mates (usually females and hermaphrodites) during copulation.
The pharynx (plural: pharynges) is the part of the throat that is behind the mouth and nasal cavity and above the esophagus and the larynx, or the tubes going down to the stomach and the lungs.
A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.
In biology, a phylum (plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.
Plankton (singular plankter) are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current.
PLOS One (stylized PLOS ONE, and formerly PLoS ONE) is a peer-reviewed open access scientific journal published by the Public Library of Science (PLOS) since 2006.
Proceedings of the National Academy of Sciences of the United States of America (PNAS) is the official scientific journal of the National Academy of Sciences, published since 1915.
The prostate (from Ancient Greek προστάτης, prostates, literally "one who stands before", "protector", "guardian") is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals.
Rotaria is a genus of asexual microorganism known as a bdelloid rotifer.
The rotifers (Rotifera, commonly called wheel animals) make up a phylum of microscopic and near-microscopic pseudocoelomate animals.
The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts.
Salmon is the common name for several species of ray-finned fish in the family Salmonidae.
Seawater, or salt water, is water from a sea or ocean.
Seisonidae is a family of rotifers, found on the gills of Nebalia, a marine crustacean.
In biology, sessility (in the sense of positional movement or motility) refers to organisms that do not possess a means of self-locomotion and are normally immobile.
Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics beyond the differences in their sexual organs.
Sexual reproduction is a form of reproduction where two morphologically distinct types of specialized reproductive cells called gametes fuse together, involving a female's large ovum (or egg) and a male's smaller sperm.
In biology, a species is the basic unit of classification and a taxonomic rank, as well as a unit of biodiversity, but it has proven difficult to find a satisfactory definition.
In biology, a species complex is a group of closely related species that are very similar in appearance to the point that the boundaries between them are often unclear.
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea.
The stomach (from ancient Greek στόμαχος, stomachos, stoma means mouth) is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates.
Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food.
Symmetry in biology is the balanced distribution of duplicate body parts or shapes within the body of an organism.
A syncytium or symplasm (plural syncytia; from Greek: σύν (syn).
Tardigrades (also known colloquially as water bears, or moss piglets) are water-dwelling, eight-legged, segmented micro-animals.
The testicle or testis is the male reproductive gland in all animals, including humans.
Trehalose is a sugar consisting of two molecules of glucose.
The vas deferens (Latin: "carrying-away vessel"; plural: vasa deferentia), also called ductus deferens (Latin: "carrying-away duct"; plural: ductus deferentes), is part of the male reproductive system of many vertebrates; these vasa transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation.
A wheel is a circular component that is intended to rotate on an axle bearing.
Among animals which produce one, the yolk (also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo.
Zygosity is the degree of similarity of the alleles for a trait in an organism.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.