Genus 



A group of related species, or occasionally only one 

 species, used in the classification of organisms, e.g., the white 

 and Scotch pines belonging to the genus Pinus. 



Geobiont 



An organism that spends all its life in the soil, e.g., 

 certain fungi, protozoa, and nematodes. 



Geochronology 



The study of biological and meteorological events in 

 relation to time. 



Geocline 



A gradation or Cline (q. v.) based on topographic or 

 spatial separation, cf. Ecocline. 



Geocole 



An organism that spends a portion of its life in the soil, 

 e.g., certain mammals, reptiles, and other animals, cf. Geo- 

 biont, Geoxene. 



Geoecotype 



See Geotype. 



Geographic Race 



A Race restricted to a certain geographic area. cf. Ecotype. 



Geological Erosion 



See Normal erosion. 



Geomorphology 



The branch of physical geography that deals with the 

 form and arrangement of the earth's crust. 



Geophile 



See Geocole. 



Geophyte 



One of Raunkiaer's Life-form classes of plants in which 

 the buds or other Perennating parts surviving unfavorable 



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