NEET BIOLOGY

Detailed explanation-1: -The correct option is A thigmotropism. The curling of tendrils is a growth movement induced due to contact or touch. Such a movement is called thigmotropic movement.

Detailed explanation-2: -Thigmotropism is a directional growth movement which occurs as a mechanosensory response to a touch stimulus. Thigmotropism is typically found in twining plants and tendrils, however plant biologists have also found thigmotropic responses in flowering plants and fungi.

Detailed explanation-3: -Function of Tendril They are known to be modified portions of leaf, stem or petiole. Their main function is to provide support to the plant as it climbs up a structure. By doing so they allow a plant to find a more suitable area to grow due to more light. When stems are modified into tendril they help plants to climb.

Detailed explanation-4: -Explanation: Haptotropism or thigmotropism refers to the response of plants to touch or contact. For example, the sticky hairs of a sundew plant curl around an insect when it comes into contact with them.