Tropism

Chemotropism is when a plant grows in response to chemicals it either may have come in contact with or are near by

Phototropism when a plant grows toward light or towards the direction that sunlight is coming from.

Geotropism is when a plants growth is affected by gravity so some people call it gravitropism.

Thigmotropism is when the plant is affected by something it touches like a grape vine climbing a fence.

Electrotropism is when a plant is effected by electric field by the plant. Like if you see a tree growing a round a power line it's this.