494 GLOSSARY. 



ditions. Such organisms are usually simple and funda 

 mental in type. Compare Specialized. 



Genesis. Birth, origin ; mode of generation. 



Genetic. Relationship in genealogy ; affinity by direct 

 descent from a common type. 



Genus (plural, genera). A group or kind comprising a 

 greater or less number of closely related species ; as 

 Quercus, the oaks ; Bosa, the roses. 



Germ. The earliest generative stage of an organism. The 

 germ -plasm is the assumed original generative substance 

 contained in the body of the parent, from which new 

 individuals arise. 



Graft -HYBRID. A hybrid produced by the graftage of one 

 species upon another. (Page 93.) 



Habit. In natural history writings, the word denotes the 

 behavior and accustomed appearance of an organism. 

 (Page 55.) 



Habitat. The particular locality or conditions in which an 

 organism grows or lives. (Page 55.) 



Homologous. Applied to organs or members which have simi- 

 lar structure, or similar structural relations to a given or 

 fundamental type, or to those members which evidently 

 have similar origins in the organism. Compare Analogous. 



Katabolism. See Catabolism. 



Member. A distinct or integral external pai't of an animal or 

 plant (as a leg, or a stamen), especially one which is not 

 directly concerned in the maintenance of the vital func- 

 tions. Compare Organ. 



Monism. The doctrine of oneness ; the supposition that all 

 phenomena and all forms of life are derived from the un- 

 folding or evolution of one single principle and substance. 

 (Page 164.) 



Naturalization. The establishment of a plant or animal in n 

 country to which it is not native, especially when done 

 through the aid, directly or indirectly, of man. 



CEcoLOGY. See Ecology. 



Ontogenetic. Pertaining to the life-history or development oj 

 an individual organism. 



