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photopositive
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photopositive
photopositive, a. (fəʊtəʊˈpɒzɪtɪv) Also with hyphen. [f. photo- 1 + positive a. and n.] 1. Zool. Of an animal: tending to move towards light.1914 [see photonegative a. 1]. 1923 Jrnl. Exper. Zool. XXVIII. 194 The photopositive reactions of insects under normal conditions usually result in their escap...
Oxford English Dictionary
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photonegative
photonegative, a. (fəʊtəʊˈnɛgətɪv) Also with hyphen. [f. photo- 1 + negative a.] 1. Zool. Of an animal: tending to move away from light.1914 S. O. Mast in Biol. Zentralblatt XXXIV. 662 In place of positively or negatively phototropic, geotropic, etc., we might use photo-, geo-, negative or positive,...
Oxford English Dictionary
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Lumbricus rubellus
With regards to light intensity, most earthworm species are photonegative to strong sources of light and photopositive to weak sources of light.
wikipedia.org
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Codling moth
They are photopositive, which means they move towards light.
wikipedia.org
en.wikipedia.org