What is the name of the movement of plants caused by changes in the humidity of the environment?

Basically, plants lead an attached lifestyle. This means that they cannot move freely. They do not need this, since they are autotrophs. But some environmental factors can influence the direction of plant growth. When the position of plant parts changes due to uneven moisture in the environment, the process of movement is called hydrotropism. Also, the direction of plant growth can change due to chemicals. This process is called chemotropism and it occurs quite often.