NEET BIOLOGY

Detailed explanation-1: -These tendrils are sensitive to the touch (or contact) of other objects. They are positively thigmotropism which means that they grow towards things they happen to touch. Tendrils have cells that can sense their contact with any nearby solid object like a bamboo stick or the stem of another plant.

Detailed explanation-2: -Tendrils are prehensile and sensitive to contact. When stroked lightly on its lower side, the tendril will, in a minute or two, curve toward that side. As it brushes against an object, it turns toward it and-the shape of the object permitting-wraps about it, clinging for as long as the stimulation persists.

Detailed explanation-3: -Tendrils respond to touch and to chemical factors by curling, twining, or adhering to suitable structures or hosts.

Detailed explanation-4: -thigmotropic movement. The movement of plants in response to the stimulus of touch is called thigmotropic movement. This type of movement is commonly observed in tendrils and ‘touch-me-not plants’.

Detailed explanation-5: -Tendrils are thread-like thin growths on climbing portions’ stems or leaves. Tendrils help in the climbing plants. Tendrils are touch-sensitive. They are positively thigmotropism, meaning they grow towards anything they come into contact with.