- Industry: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A tubelike structure in the body of a shelled cephalopod, such as the chambered nautilus, extending through the partitions of each chamber of the septate shell; the term is also used to describe tubular structures that direct water flow, or as a feeding syphon of several different kinds of invertebrates.
Industry:Natural environment
An embryonic cell that can give rise to any type of differentiated cell. They can be derived from two sources: the inner cell mass from a blastocyst or the primordial germ cells (eggs and sperm) of an older embryo.
Industry:Natural environment
Any small column-like structure in various plants and animals, often forming the central axis of development for the organism as a whole, or an anatomical structure; the thickened axial pillar around which the whorls of gastropods are constructed; the central axis of a corallite; the central structure of the calyx formed by fusion of the septa.
Industry:Natural environment
Energy travelling in the form of electromagnetic waves; energy emitted by the sun, typically in photons and waves .
Industry:Natural environment
Of or relating to photometry; a more precise measurement of the brightness (intensity) of light, which can be digitised and calibrated.
Industry:Natural environment
Research conducted with the sole goal of obtaining knowledge; in contrast with applied research.
Industry:Natural environment
The colloquial or common name of a taxon, i.e., in any language or form other than that of biological nomenclature. Vernacular names have no status in nomenclature.
Industry:Natural environment
The most recent ancestral form or species from which two different species evolved.
Industry:Natural environment
The smallest unit of living matter. All organisms are composed of cells and cell products (Cell Theory). Organisms exist either as single cells (unicellular) or as multicellular units.
Industry:Natural environment
A bond between two or more atoms that is provided by electrons that travel between the atoms' nuclei, holding them together but keeping them a stable distance apart.
Industry:Natural environment
