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Meaning: a prefix used to make words with a sense opposite to that of the root word; in this case, meaning "without" or "-less". This is usually used to describe organisms without a certain characteristic, as well as organisms in which that characteristic may not be immediately obvious.
Most radially symmetric animals are symmetrical about an axis extending from the center of the oral surface, which contains the mouth, to the center of the opposite (aboral) end. Animals in the phyla Cnidaria and Echinodermata generally show radial symmetry, [7] although many sea anemones and some corals within the Cnidaria have bilateral ...
This list of Latin and Greek words commonly used in systematic names is intended to help those unfamiliar with classical languages to understand and remember the scientific names of organisms. The binomial nomenclature used for animals and plants is largely derived from Latin and Greek words, as are some of the names used for higher taxa , such ...
of or relating to a gland: Greek ἀδήν, ἀδέν-, (adḗn, adén-), an acorn; a gland: adenocarcinoma, adenology, adenotome, adenotyphus: adip-of or relating to fat or fatty tissue Latin adeps, adip-, fat adipocyte: adren-of or relating to the adrenal glands: Latin ad + rēnēs, kidneys adrenal artery, adrenaline, adrenochrome-aemia, ema ...
A diagram showing four of the six canonical orbital elements. The orbital plane (yellow) intersects a reference plane (grey). orbital inclination The tilt of an object's orbit around an astronomical body, expressed as the angle between the orbital plane or axis of direction of the orbiting object and a plane of reference. orbital mechanics ...
There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by no means be considered complete and authoritative and should be used carefully.
Based on Austin Wright's novel Tony and Susan, the psychological 2016 drama Nocturnal Animals, starring Jake Gyllenhaal and Amy Adams, is known for an ambiguous ending that leaves it up to the ...
Also called an antibacterial. A type of antimicrobial drug used in the treatment and prevention of bacterial infections. Archaea One of the three recognized domains of organisms, the other two being Bacteria and Eukaryota. artificial selection Also called selective breeding. The process by which humans use animal breeding and plant breeding to selectively control the development of particular ...