NEET BIOLOGY

Detailed explanation-1: -Tendrils are sensitive to touch. When they come in contact with any support, the part of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. This causes the tendril to circle around the object and thus cling to it.

Detailed explanation-2: -Due to this requirement for support, anytime tendrils come into contact with or touch an item, the side they are touching grows slowly while the side they are touching opposite is shown to grow extremely quickly. Cells on the opposing side rapidly divide as a result.

Detailed explanation-3: -Tendrils grow towards a support in response to their touch. This phenomenon is known as thigmotropism.

Detailed explanation-4: -Tendrils respond to touch and to chemical factors by curling, twining, or adhering to suitable structures or hosts.

Detailed explanation-5: -Tendrils do not have any sensory structures but still they are able to find their support just as we gropen the dark for finding the switch-board. > Tendrils perform circumnutation from their apical regions. In this the terminal parts of tendrils move in together directions.