NEET BIOLOGY

Detailed explanation-1: -An example of positive thigmotropism is when a tendril on a climbing plants coils around a fence. Negative thigmotropism is when the plant moves away from a contact stimulus. An example of this occurs when a plant’s roots grow around an obstacle.

Detailed explanation-2: -Thigmotropism behavior causes the creeping plant to grow and coil around the tree and grow in an upward direction towards it. Ivies often use trees for climbing support. Some house or garden plants also show thigmotropic behavior, such as Morning glory, periwinkle, Money plants, Passion vines, Ivy plant, etc.

Detailed explanation-3: -Tropism is a general term referring to any instance of growth or movement of an organism in response to the environment. Vines display another kind of tropism known as thigmotropism, meaning they respond to touch.

Detailed explanation-4: -Thigmotropism is when plants grow in response to touch or contact with objects. For example, vines have small tendrils that curl around walls or trellises. Plants like this don’t usually have strong stems. So, thigmotropism helps them stay upright and keep growing.

Detailed explanation-5: -An example of thigmotropism is the coiling movement of tendrils in the direction of an object that it touches. On the other hand, the folding movement of the Mimosa pudica leaflets, can be considered as an example of thigmonastism.