10. 
    tropism
    response or orientation of a plant or certain lower animals to a stimulus that acts with greater intensity from one direction than another. It may be ... [3 related articles]
    Found op http://www.britannica.com/eb/a-z/t/84
    
    
11. 
    Tropism
    A tropism (from Greek τροπή, trope, "a turning") is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic...
    Found op http://en.wikipedia.org/wiki/Tropism
    
    
12. 
    tropism
    tropism (trōp'izum) , involuntary response of an organism, or part of an organism, involving orientation toward (positive tropism) or away from (negative tropism) one or more external stimuli. The term tropism is usually applied to growth and turgor movements in plants; an involuntary orie...
    Found op http://www.infoplease.com/ce6/sci/A0849494.html
    
    
13. 
    Tropism
    Tropism is a biological term for the behaviour of animals and plants with respect to light or other stimuli.
    Found op http://www.probertencyclopaedia.com/browse/ET.HTM
    
    
14. 
    tropism
    Type: Term Pronunciation: trō′pizm Definitions: 1. The phenomenon, observed in living organisms, of moving toward (positive tropism) or away from (negative tropism) a focus of light, heat, or other stimulus; usually applied to the movement of a portion of the organism as opposed to taxis,...
    Found op http://www.medilexicon.com/medicaldictionary.php?t=94204
    
    
15. 
    tropism
    Directional growth of a plant, or part of a plant, in response to an external stimulus such as gravity or light. If the movement is directed towards the stimulus it is described as positive; if away from it, it is negative. Geotropism for example, the response of plants to gravity, causes the root (...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0007087.html
    
    
16. 
    Tropism
    the turning of a plant part such as a leaf in response to some external stimuli
    Found op http://www.encyclo.co.uk/local/21767
    
    
17. 
    tropism
    1) Reaction 2) Response 3) Why plants turn to the sun
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/tropism/1
    
    

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