Question

What is tropism?? Explain in easy way.

Answer 1

When animals, including humans, respond to a stimulus (which is something that causes a response), we call it a reaction. For example, if someone touches your arm, you generally turn to react. In plants, the response to a stimulus is known as a tropism
Plants show two different types of movements, one is independent of growth and the other is dependent on growth.
The movement of a plant part in response to light is called phototropism
The movement of a plant part in response to gravity is called geotropism.
The movement of a plant part in response to chemicals is called chemotropism.
The movement of a plant part in response to water is called hydrotropism.
The directional movement of a plant part in response to touch of an object is called thigmotropism