Mixotrophic 



Refers to an organism that is both Autotrophic (q. v.) 

 and Heterotrophic (q. v.), e. g. Insectivorous plants. 



Model 



The organism that in Mimicry is imitated. 



Modification 



A non-inheritable, Phenotypic variation of a character- 

 istic of an organism, caused by the environment, e. g., taller 

 growth of a plant in the shade than in the sun. cf. Acquired 

 character. 



Moisture Equivalent 



The percentage of moisture retained by a small sample 

 of saturated soil after being subjected to a centrifugal force 

 1000 times that of gravity for a definite period of time, usu- 

 ally one-half hour. 



Moisture Stress 



The tension at which water is held in the soil. 



Moisture Tension 



The force at which water is held in the soil. 



Mollusk 



An organism in the large phylum Mollusca, e. g., snail, 

 oyster. 



Monadnock 



An erosion remnant such as a hill or a mass of rock rising 

 above the surrounding land. 



Monandry 



The mating of a female with only one male, or the 

 presence of only one stamen in a flower. 



Monoclimax (Theory) 



As postulated by F. . Clements, ecologic succession will 



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