apogeotropism
noun
growth or orientation away from the earth; negative geotropism.
apogeotropic
-
a word derived from
apogeotropism.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Avena sativa.—The sheath-like cotyledons, whilst young, are strongly apogeotropic; and some which were placed at 45o beneath the horizon rose 90o in 7 or 8 h. in lines almost absolutely straight.
From The Power of Movement in Plants by Charles Darwin
Several other analogous cases were casually observed, and in all of them the apogeotropic movement could be seen to consist of modified circumnutation.
From The Power of Movement in Plants by Charles Darwin
Lilium auratum: apogeotropic movement of stem, traced on a vertical glass during 2 days and 2 nights, from 10.40 A.M.
From The Power of Movement in Plants by Charles Darwin
The upper part is apogeotropic, and therefore grows vertically upwards, excepting a short portion close to the blades, which at an early period bends downwards and becomes arched, and thus breaks through the ground.
From The Power of Movement in Plants by Charles Darwin
The basal part for a short length where united to the undeveloped hypocotyl and radicle is strongly geotropic, whilst the whole upper part is strongly apogeotropic.
From The Power of Movement in Plants by Charles Darwin
