Question

Tendrils exhibit/twinning of tendrils is due to
A) Thigmotropism
B) Seismonasty
C) Heliotropism
D) Diageotropism

Answer 1

Hint: As specialized cells in root caps detect and react to gravity, plant roots often grow downwards. This is an instance of tropism.

Complete Answer:
In their environment, plants sense and react to stimuli. Typically, they are anchored to the earth. Alternatively, a plant's primary means of reaction is to alter how it grows. In order to regulate their reactions, plants often do not have a nervous system. Instead, hormones, which are molecular messenger molecules, usually regulate their reactions.

Now, let us find the solution from the options-
- In reaction to contact with a firm touch, the motion of the plant component is termed thigmotropism. An instance of thigmotropism is the twining motions attributable to help found in twiners and tendrils.
- Seismonasty is a plant's nastic reaction to vibration or touch. Seismonasty is caused by the falling of Mimosa pudica leaves upon contact. Thus, option B is not the correct option.
- Heliotropism is the movement of development or stem bending in the direction of light. This is also known as solar tracking. Thus option C is not the correct option.
- Diageotropism is the reaction of the plant component to gravity so that it expands horizontal to gravity. Thus, option D is not the correct option.

Thus, the correct answer is option (A) Thigmotropism.

Note: Because of unilateral growth inhibition, the twining activity happens. That is, the rate of growth is slower on the side of the stem that is being touched than on the side opposing the contact. The resulting pattern of creation is to bind and occasionally coil around the entity that touches the plant.