Previous experiments on the effects of auxins on the geotropic responses of seedling pea roots (Audus and Brownbridge, 1957) have been extended using the 'anti-auxin' ...

IF the punctum vegetationis of a root is removed by a transverse section, the root loses more or less completely the power of curving geotropically downwards when placed in a horizontal position. This ...

This is a preview. Log in through your library . Abstract Auxin transport was studied in coleoptile sections that were stimulated geotropically. The early time course of auxin-transport asymmetry was ...

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I HAVE just been listening to a discussion, at the Zoological Laboratory, arising from some interesting observations by Mr. G. L. Clarke on the tropisms of Daphnia. A question was asked as to the ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...