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00:33 Sep 8, 2001 |
English language (monolingual) [PRO] Science | |||||||
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| Selected response from: amarilis Thailand Local time: 03:46 | ||||||
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SUMMARY OF ALL EXPLANATIONS PROVIDED | ||||
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4 | in some protozoa .... |
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4 | a tendency of an organism to grow toward or away from a source of light |
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in some protozoa .... Explanation: Yes, in some protozoa, like photosynthetic euglenoids. Go here: http://lifesci.rutgers.edu/~triemer/intro.htm#Mitochondria and Chloroplasts or put "euglena" in one of the searching machines and see, there will be an answer to you lifesci.rutgers.edu/~triemer/intro.htm#Mitochondria and Chloroplasts |
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The asker has declined this answer Comment: You were to select from 1 of the 4 options given! |
a tendency of an organism to grow toward or away from a source of light Explanation: dear poornima, this is gonna be a long explanation... hope it helps. Phototropism = [growth toward the light]: the tendency of the organism to grow toward or away from a source of light. Photoreaction= this one I can't find the exact meaning for the word but i found "photosensitivity" which is relevant to what you just asked. It means a person who's very sensitive to the sun and can get sunburnt severely very easily. (www.elibrary.com) Chloro = green synthesis = [formation of chemical compound] :the process of forming a complex compound through a series of one or more chemical reactions involving simpler substances. Pigmentation= 1)[natural color] the natural color of plants and animals. 2) [discoloration]: abnormal coloring in plant or animal tissue that occur as a result of disease. hope it helps somewhat :) Reference: http://www.dictionary.msn.com |
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