Primate 



An animal in the order Primates which includes lemurs, 

 monkeys, apes, man, and others, in the class Mammalia. 



Primeval 



Refers to vegetation, geological features, and other 

 natural phenomena, in original condition, before any modi- 

 fication has been made through the influence of modern 

 man, e.g., a primeval forest. 



Primitive 



Refers to an organism, organ, or behaviour that is char- 

 acteristic of an early stage in evolution, not specialized or 

 advanced in evolution. 



Primitive Area 



An area in which conveniences for transportation and 

 living are kept simple and not modernized, cf. Natural area. 



Primordium 



A part of an organism where growth is initiated. 



Prisere 



See Primary succession. 



Proclimax 



According to F. E. Clements any community that re- 

 sembles a climax in permanence or extent such as a Post- 

 climax and Preclimax (q. v.). cf. Subclimax, Plagioclimax, 

 Disclimax. 



Producer 



An organism that can utilize radiant energy to synthesize 

 organic substances from inorganic materials, cf. Consumer 

 organisms. 



Productivity 



(1) The total quantity of organic material produced 

 within a given period by organisms, or the energy that this 



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