heliotropism

/hee-lee-o-truh-piz-uhm, hee-lee-uh-troh-piz-uhm/US // ˌhi liˈɒ trəˌpɪz əm, ˌhi li əˈtroʊ pɪz əm //UK // (ˌhiːlɪˈɒtrəˌpɪzəm) //

向日葵,向日葵效应,向日葵主义,向日葵现象

Definitions

n.名词 noun

If it acts in a one-sided way, it causes the particular form of stimulation which we call phototaxis or heliotropism.
This 'midday sleep' has been termed para-heliotropism by Darwin.
We notice also the reverse phenomenon, namely, that chemical changes produced in the animal destroy its heliotropism.
These periodic motions are determined to a large extent, if not exclusively, by the heliotropism of these animals.
This problem reduces itself simply to that of the method whereby the gametes transmit heliotropism to the larvae or to the adult.