reproduction resembling sexual reproduction but in which 

 the egg and sperm do not fuse. cf. Apogamy, Parthenogenesis. 



Aposematic 



Refers to organisms that possess coloration associated with 

 harmful or distasteful contents, and therefore such organism 

 may be avoided by predators. 



Appetitive Behaviour 



The reaction of an animal by which it becomes located 

 or in a suitable condition to satisfy its needs. 



Apron 



A layer of material such as concrete or timber to protect 

 a surface from erosion, e.g., pavement below a spillway. 



Apterous 



Refers to organisms or organs lacking wings, cf. Alar. 



Aqueduct 



A conduit for water, e.g., canal, pipe, tunnel, or a 

 combination. 



Aquiculture 



The use of artificial means to increase the production 

 of fish, oysters, crabs, etc., in fresh or salt waters. 



Aquifer (Aquafer) 



A porous soil or geological formation lying between 

 impermeable strata in which water may move for long 

 distances, yields ground water to springs and wells. 



Aquiherbosa 



Communities of herbs occurring in ponds and swamps. 



Aquiprata 



Communities of plants where ground water is an impor- 

 tant factor, e.g., wet meadows. 



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