A Text-Book of Plant Physiology
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In our eReader you can find the full English version of the book. Read A Text-Book of Plant Physiology Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Text-Book of Plant Physiology
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Even slow water-currents have been found to stimulate and direct growth and movement in rather peculiar fashion. Thus the roots of certain plants, if suspended in clean running water, will bend so that the tips point and grow up stream. This phenomenon is known as rheotropisin.* The plasmodia of certain Myxomycetes will grow on a vertical strip of filter-paper always in the direc- tion opposite to that of the current of water which is sup- * Juel, H. 0. Untersuchungen iiber den Eheotropismus de...r Wurzeln.
Jahrb. f. wiss. Bot., Bd. 34, 1900. Newcombe, F. C. Eheotropism of roots. Bot. Gazette vol. ,33 1902.
190 PLANT PHYSIOLOGY l^lied to them, whether this be ui^ward or downward. This phenomenon is called rheotaxit:,*' but it is not certain that it is not a resjionse to obscure chemical stimuli rather than to a current of water merely'. Rheotaxis and rheo- tropism are therefore probably distinct phenomena. The signiflcance of rheotropism is not understood.
T'igure 13. I'osti'kiu Falni:rfornii.s.
What to read after A Text-Book of Plant Physiology?
You can find similar books in the "Read Also" column, or choose other free books by George James Peirce to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Even slow water-currents have been found to stimulate and direct growth and movement in rather peculiar fashion. Thus the roots of certain plants, if suspended in clean running water, will bend so that the tips point and grow up stream. This phenomenon is known as rheotropisin.* The plasmodia of certain Myxomycetes will grow on a vertical strip of filter-paper always in the direc- tion opposite to that of the current of water which is sup- * Juel, H. 0. Untersuchungen iiber den Eheotropismus de...r Wurzeln.
Jahrb. f. wiss. Bot., Bd. 34, 1900. Newcombe, F. C. Eheotropism of roots. Bot. Gazette vol. ,33 1902.
190 PLANT PHYSIOLOGY l^lied to them, whether this be ui^ward or downward. This phenomenon is called rheotaxit:,*' but it is not certain that it is not a resjionse to obscure chemical stimuli rather than to a current of water merely'. Rheotaxis and rheo- tropism are therefore probably distinct phenomena. The signiflcance of rheotropism is not understood.
T'igure 13. I'osti'kiu Falni:rfornii.s.
What to read after A Text-Book of Plant Physiology?
You can find similar books in the "Read Also" column, or choose other free books by George James Peirce to read onlineMoreLess
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