Photo Researchers ftp March 2011
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Corn, Zea mays, seedling recently germinated and illustrating gravitropism (geotropism). The seed was germinated upside down and in the dark. Nevertheless, the root is curved around and is growing downwards (positive gravitropism) and the shoot upwards (negative gravitropism). The emerging plant oriented itself correctly without any cue from the sun - it responded to gravity.
Photo Researchers ftp March 2011
2011-03-23
EAST NEWS
Science Source
Martin Shields
BR4597
1,62MB
37cm x 28cm by 300dpi
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