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Hymenoptera
Apocrita Symphyta HYMENOPTERA is a large order of insects , comprising the sawflies , wasps , bees , and ants . Over 150,000 living species of Hymenoptera have been described, in addition to over 2,000 extinct ones. Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible. The ovipositor is often modified into a stinger
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Triassic
The TRIASSIC ( /traɪˈæsɪk/ ) is a geologic period and system which spans 50.9 million years from the end of the Permian
Permian
Period 251.902 million years ago (Mya ), to the beginning of the Jurassic Period 201.3 Mya . The Triassic
Triassic
is the first period of the Mesozoic Era . Both the start and end of the period are marked by major extinction events . The Triassic
Triassic
began in the wake of the Permian– Triassic
Triassic
extinction event , which left the earth's biosphere impoverished; it would take well into the middle of this period for life to recover its former diversity. Therapsids and archosaurs were the chief terrestrial vertebrates during this time. A specialized subgroup of archosaurs, called dinosaurs , first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic
Jurassic
Period
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Metamorphosis (biology)
METAMORPHOSIS is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation . Metamorphosis
Metamorphosis
is iodothyronine-induced and an ancestral feature of all chordates . Some insects , fishes , amphibians , mollusks , crustaceans , cnidarians , echinoderms , and tunicates undergo metamorphosis, which is often accompanied by a change of nutrition source or behavior . Animals that go through metamorphosis are called metamorphoses. Animals can be divided into species that undergo complete metamorphosis ("holometaboly "), incomplete metamorphosis ("hemimetaboly "), or no metamorphosis ("ametaboly "). Scientific usage of the term is technically precise, and it is not applied to general aspects of cell growth , including rapid growth spurts
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Suborders
In biological classification , the ORDER (Latin : ordo) is * a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes . Other well-known ranks are life , domain , kingdom , phylum , class , family , genus , and species , with order fitting in between class and family. An immediately higher rank, SUPERORDER, may be added directly above order, while SUBORDER would be a lower rank. * a taxonomic unit, a taxon , in that rank. In that case the plural is orders (Latin ordines). Example: All owls belong to the order Strigiformes. What does and does not belong to each order is determined by a taxonomist , as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order
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Animal
ANIMALS are eukaryotic , multicellular organisms that form the biological kingdom ANIMALIA. With few exceptions, animals are motile (able to move), heterotrophic (consume organic material), reproduce sexually , and their embryonic development includes a blastula stage. The body plan of the animal derives from this blastula, differentiating specialized tissues and organs as it develops; this plan eventually becomes fixed, although some undergo metamorphosis at some stage in their lives. Zoology is the study of animals. Currently there are over 66 thousand (less than 5% of all animals) vertebrate species, and over 1.3 million (over 95% of all animals) invertebrate species in existence. Classification of animals into groups (taxonomy ) is accomplished using either the hierarchical Linnaean system; or cladistics , which displays diagrams (phylogenetic trees ) called cladograms to show relationships based on the evolutionary principle of the most recent common ancestor
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Arthropod
Condylipoda Latreille, 1802 An ARTHROPOD (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton ), a segmented body, and paired jointed appendages . Arthropods form the phylum EUARTHROPODA, which includes insects , arachnids , myriapods , and crustaceans . The term ARTHROPODA as originally proposed refers to a proposed grouping of Euarthropods and the phylum Onychophora . Arthropods are characterized by their jointed limbs and cuticle made of chitin , often mineralised with calcium carbonate . The arthropod body plan consists of segments, each with a pair of appendages. The rigid cuticle inhibits growth, so arthropods replace it periodically by moulting . Their versatility has enabled them to become the most species-rich members of all ecological guilds in most environments
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Ancient Greek Language
ANCIENT GREEK includes the forms of Greek used in ancient Greece
Greece
and the ancient world from around the 9th century BC to the 6th century AD. It is often roughly divided into the Archaic period (9th to 6th centuries BC), Classical period (5th and 4th centuries BC), and Hellenistic period
Hellenistic period
(3rd century BC to the 6th century AD). It is antedated in the second millennium BC by Mycenaean Greek . The language of the Hellenistic phase is known as Koine (common). Koine is regarded as a separate historical stage of its own, although in its earliest form it closely resembled Attic Greek and in its latest form it approaches Medieval Greek
Medieval Greek
. Prior to the Koine period, Greek of the classic and earlier periods included several regional dialects
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Etymology
ETYMOLOGY (/ˌɛt.ɪˈmɒl.ə.dʒi/ ) is the study of the history of words , their origins, and how their form and meaning have changed over time. By extension, the term "the etymology (of a word)" means the origin of the particular word. For a language such as Greek with a long written history , etymologists make use of texts in these languages and texts about the languages to gather knowledge about how words were used during earlier periods of their history and when they entered the languages in question. Etymologists also apply the methods of comparative linguistics to reconstruct information about languages that are too old for any direct information to be available. By analyzing related languages with a technique known as the comparative method , linguists can make inferences about their shared parent language and its vocabulary. In this way, word roots have been found that can be traced all the way back to the origin of, for instance, the Indo-European language family
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Protein
PROTEINS (/ˈproʊˌtiːnz/ or /ˈproʊti.ᵻnz/ ) are large biomolecules , or macromolecules , consisting of one or more long chains of amino acid residues . Proteins perform a vast array of functions within organisms , including catalysing metabolic reactions , DNA replication
DNA replication
, responding to stimuli , and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes , and which usually results in protein folding into a specific three-dimensional structure that determines its activity. A linear chain of amino acid residues is called a polypeptide . A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called peptides , or sometimes oligopeptides
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Clade
A CLADE (from Ancient Greek
Ancient Greek
: κλάδος, klados, "branch") 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 common ancestor may be an individual, a population , a species (extinct or extant ), and so on right up to a kingdom . Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic
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DNA
DEOXYRIBONUCLEIC ACID (/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/ ( listen ); DNA) is a thread-like chain of nucleotides carrying the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses . DNA
DNA
and ribonucleic acid (RNA) are nucleic acids ; alongside proteins , lipids and complex carbohydrates (polysaccharides ), they are one of the four major types of macromolecules that are essential for all known forms of life . Most DNA
DNA
molecules consist of two biopolymer strands coiled around each other to form a double helix . The two DNA
DNA
strands are called polynucleotides since they are composed of simpler monomer units called nucleotides . Each nucleotide is composed of one of four nitrogen-containing nucleobases (cytosine , guanine , adenine or thymine ), a sugar called deoxyribose , and a phosphate group
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Cladogram
A CLADOGRAM (from Greek clados "branch" and gramma "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to descendants, nor does it show how much they have changed; many evolutionary trees can be inferred from a single cladogram. A cladogram uses lines that branch off in different directions ending at a clade , a groups of organisms with a last common ancestor . There are many shapes of cladograms but they all have lines that branch off from other lines. The lines can be traced back to where they branch off. These branching off points represent a hypothetical ancestor (not an actual entity) which can be inferred to exhibit the traits shared among the terminal taxa above it. This hypothetical ancestor might then provide clues about the order of evolution of various features, adaptation, and other evolutionary narratives about ancestors
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Hymen (god)
HYMEN ( Ancient Greek
Ancient Greek
: Ὑμήν), HYMENAIOS or HYMENAEUS, in ancient Greece , was a god of marriage ceremonies, inspiring feasts and song. Related to the god's name, a hymenaios is a genre of Greek lyric poetry sung during the procession of the bride to the groom's house in which the god is addressed, in contrast to the Epithalamium , which was sung at the nuptial threshold. He was one of the winged love gods, Erotes . He was the son of a muse , Clio
Clio
or Calliope
Calliope
or Urania
Urania
or Terpsichore . Cupid
Cupid
standing (left), and Hymen sitting (right). Hymen's burning torch on a Napoleonic wedding medal of 1807
1807

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Taxonomy (biology)
TAXONOMY (from Ancient Greek τάξις (taxis ), meaning 'arrangement', and -νομία (-nomia), meaning 'method ') is the science of defining and naming groups of biological organisms on the basis of shared characteristics. Organisms are grouped together into taxa (singular: taxon) and these groups are given a taxonomic rank ; groups of a given rank can be aggregated to form a super-group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain , kingdom , phylum (division is sometimes used in botany in place of phylum), class , order , family , genus and species . The Swedish botanist Carl Linnaeus
Carl Linnaeus
is regarded as the father of taxonomy, as he developed a system known as Linnaean taxonomy for categorization of organisms and binomial nomenclature for naming organisms
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Order (biology)
In biological classification , the ORDER (Latin : ordo) is * a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes . Other well-known ranks are life , domain , kingdom , phylum , class , family , genus , and species , with order fitting in between class and family. An immediately higher rank, SUPERORDER, may be added directly above order, while SUBORDER would be a lower rank. * a taxonomic unit, a taxon , in that rank. In that case the plural is orders (Latin ordines). Example: All owls belong to the order Strigiformes. What does and does not belong to each order is determined by a taxonomist , as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order
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