A growing seedling is kept in a dark room. A burning candle is placed near it for a few days. The top part of seedling bends towards the burning candle. This is an example of:

The bending of the shoot of a plant in response to light is called:

The stimulus in the process of thigmotropism is:

Which of the following acts as a stimulus in the process of hydrotropism?

The growth movement of a plant part in response to the touch of an object is called: