The growth of pollen tubes towards ovules is due to

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asked May 29, 2017 in Biology by Kundan kumar (49,132 points) 34 381 1015
(a) hydrotropism
(b) chemotropism
(c) geotropism
(d) phototropism

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answered May 29, 2017 by Vikash Kumar (144,729 points) 8 11 21
(b) chemotropism

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