Question

Movement of Indian telegraph plant is
A. Turgor movement
B. Geotropism
C. Phototropism
D. Cyclosis

Answer 1

Hint: The movement of higher plants are chiefly in the form of bending, twisting, and elongation of certain plant parts or organs. There is spontaneous movement that takes place without any external stimuli. Indian telegraph plant is the plant that generally belongs to the family Fabaceae, under the genus Codariocalyx. They have compound leaves that show three leaflets out of which two are very small in size.

Complete Answer:
Indian telegraph plant or Desmodiumgyrans is popular for its movement. The small lateral leaflets will rotate on the axis moving in jerky motions under the slightest influence of touch, sunshine, warmth, or small vibrations. At night they droop downwards. Turgor movement is brought about by changes in turgor pressure of the cell which is the reason for movement. The turgor movement is also divided into two parts one is autonomous movement and the second is paratonic movement. They do not require any type of stimulus therefore observed in the telegraph plants. This type of movement takes place in the plants because of changes or variations in the stalk base of the leaflets of plants.

So, the correct answer is option ‘A’ that is turgor movement.

Additional information: It is widely distributed throughout Bangladesh, Bhutan, Cambodia, China, India, Indonesia, etc. Autonomous turgor movements do not require any stimulus and are observed in the Indian Telegraph plant- Desmodium Gyrans.

Note: The telegraph plant is also known as the Codariocalyx Motorios. The period of leaflet is based on the temperature of the given condition. Its common name is dancing plant or semaphore plant.