]> OBOE Ecology This ontology contains biological terms that are common across OBOE extensions. It is not comprehensive, but rather the beginnings of a general biological ontology. Version 1.0 Copyright (c) 2006-2011 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. Adult Stage Fish A fish categorized in a developmental stage as an adult. Alevin Larval fish that have hatched but retain the yolk sac. Alevin Stage Fish A fish categorized in a developmental stage as an alevin. A general term for members of several groups of non-flowering, usually photosynthetic, often aquatic, eukaryotic organisms ranging from unicellular to large multicellular forms. They lack true roots, stems and leaves characteristic of terrestrial plants. Most definitions do not include prokaryots (e.g., cyanobacteria) . Taxonomically, these belong to several taxonomic groups often classified as Protista (itself a catch-all term), which are mostly phytosynthetic. The singular form, alga, is less common [various sources]. Dead Organism An organism no longer able to sustain life. Egg A fertilised ovum, or zygote, and its surrounding material. Egg Stage Fish A fish categorized in a developmental stage as an egg. Gametophyte In plants, gametophytes are haploid (1n) and produce gametes by mitosis. Two gamets fuse to become a zygote. The relationship between gametophyte and sprophyte varies among different groups of plants and algae. For more information, look up "alternation of generations" Living Organism An organism able to sustain life. Organism An individual life form. Parr Parr Stage Fish A fish categorized in a developmental life stage as a parr. Smolt Smolt Stage Fish A fish categorized in a developmental stage as a smolt. Sporophyte In plants, sprophytes have diploid (2n) cells, and mature individuals divide by meiosis to produce haploid (n) spores. The relationship between gametophyte and sprophyte varies among different groups of plants and algae. For more information, look up "alternation of generations". In many algae, the sporophyte is the dominant generation. Subadult Stage Fish A fish categorized in a developmental stage as subadults. Zygote A fertilized cell (the combined ovum and sperm gametes).