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tropism
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The answer TROPISM has 4 possible clue(s) in existing crosswords.
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The word TROPISM is VALID in some board games. Check TROPISM in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of tropism in various dictionaries:
noun - an involuntary orienting response
The turning or bending movement of an organism or a part toward or away from an external stimulus, such as light, heat, or gravity.
noun - the involuntary response of an organism to an external stimulus
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Keep reading for additional results and analysis below.
Possible Crossword Clues |
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Why plants turn to the sun |
Plant's movement |
Plant's response requires replacing imports |
Involuntary orienting response |
Last Seen in these Crosswords & Puzzles |
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Nov 13 2015 Newsday.com |
Jul 9 2005 The Times - Cryptic |
Nov 21 2004 The Telegraph - General Knowledge |
Jul 19 1998 New York Times |
Tropism description |
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A tropism (from Greek , tropos, "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 movements which are non-directional responses). Viruses and other pathogens also affect what is called "host tropism", "tissue tropism", or "cell tropism", or in which case tropism refers to the way in which different viruses/pathogens have evolved to preferentially target specific host species, specific tissue, or specific cell types within those species. Tropisms are usually named for the stimulus involved (for example, a phototropism is a reaction to sunlight) and may be either positive (towards the stimulus) or negative (away from the stimulus). * Tropisms occur in four sequential steps. First, there is a perception to a stimulus, which is usually beneficiary to the plant. Next, signal transductio |