Practical Physiology of Plants
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In our eReader you can find the full English version of the book. Read Practical Physiology of Plants 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 Practical Physiology of Plants
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It will be found that the tendrils show no signs of curving ; they must now be touched with the uncoated part of the rod, to prove that the absence of movement is not due to want of sensitiveness.
On a windy day (if the experiment is made out-of- doors) it may be a little difficult to make sure that, in the first part of the experiment, the tendril does not come into contact with the uncoated part of the rod : it is for this reason that a good length of gelatine coating is recom- mended. The te...ndril can however easily be held still by touching its convex (insensitive) side with another gela- tine rod ; the slight stickiness of the gelatine fixes the tendril while the observer manipulates with the first rod.
1 Untersuchiingen aus d. Hot. Institut zu Tubingen, i. 1885, p. 4^3, - Pfeffer uses solutions containing from 5 to 1-4 per cent, of air-dry gelatine.
202 MIMOSA. [CH. VIII (232) Mimosa: movements j^'i^oduced hy stimulation.
The nature of the movements of Mimosa sensitiva may be seen by giving the plant a shake, when the main petioles will be seen to sink, the second petioles to move together, and the leaflets to close.
What to read after Practical Physiology of Plants?
You can find similar books in the "Read Also" column, or choose other free books by Francis Darwin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It will be found that the tendrils show no signs of curving ; they must now be touched with the uncoated part of the rod, to prove that the absence of movement is not due to want of sensitiveness.
On a windy day (if the experiment is made out-of- doors) it may be a little difficult to make sure that, in the first part of the experiment, the tendril does not come into contact with the uncoated part of the rod : it is for this reason that a good length of gelatine coating is recom- mended. The te...ndril can however easily be held still by touching its convex (insensitive) side with another gela- tine rod ; the slight stickiness of the gelatine fixes the tendril while the observer manipulates with the first rod.
1 Untersuchiingen aus d. Hot. Institut zu Tubingen, i. 1885, p. 4^3, - Pfeffer uses solutions containing from 5 to 1-4 per cent, of air-dry gelatine.
202 MIMOSA. [CH. VIII (232) Mimosa: movements j^'i^oduced hy stimulation.
The nature of the movements of Mimosa sensitiva may be seen by giving the plant a shake, when the main petioles will be seen to sink, the second petioles to move together, and the leaflets to close.
What to read after Practical Physiology of Plants?
You can find similar books in the "Read Also" column, or choose other free books by Francis Darwin to read onlineMoreLess
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