Question 2
Hydrotropism is the phenomenon in which the plant root tip moves towards a higher water gradient. It was then discovered that a certain hormone, labeled by green fluorescence, distributes opposite from the water stimulus in the plant root tip of Arabidopsis thaliana, hence playing a significant role in hydrotropism. Which hormone is it? Reference: Chang J, Li X, Fu W, Wang J, Yong Y, Shi H, Ding Z, Kui H, Gou X, He K, Li J. Cell research. 2019 Dec;29(12):984-93.
