Plants respond to their environments, which example describes each term

1 answer

1. Phototropism: Plants responding to light by growing or bending towards it. For example, sunflowers tracking the movement of the sun and growing towards it during the day.

2. Thigmotropism: Plants responding to touch or contact stimulus, such as growing around objects for support. An example could be vines growing and wrapping around a trellis or a tree.

3. Hydrotropism: Plants responding to water availability by growing their roots towards a water source. For instance, roots growing towards or along a water gradient in search of moisture.

4. Geotropism/Gravitropism: Plants responding to gravity by growing either towards it (negative geotropism) or away from it (positive geotropism). A common example is a plant's roots growing downward, towards the pull of gravity, while the stem grows upward.

5. Chemotropism: Plants responding to particular chemicals in their environment by growing towards or away from them. Some examples include pollen tubes growing towards ovules for fertilization or plant roots growing away from toxic substances in the soil.