Examples from the Web for heliotropism
We notice also the reverse phenomenon, namely, that chemical changes produced in the animal destroy its heliotropism.
The heliotropism of animals is identical with the heliotropism of plants.
If it acts in a one-sided way, it causes the particular form of stimulation which we call phototaxis or heliotropism.The Wonders of Life|Ernst Haeckel
We have mentioned the newly hatched larv of the barnacle in connection with heliotropism.The Organism as a Whole|Jacques Loeb
Very little attention has been given to the subject of heliotropism until within a few recent years.Butterflies Worth Knowing|Clarence M. Weed